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- Title
- Young children's artifact conceptualization: a child centered approach.
- Creator
- Schultz, Patricia P., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
One of the most fundamental functions of human cognition is to parse an otherwise chaotic world into different kinds of things. The ability to learn what objects are and how to respond to them appropriately is essential for daily living. The literature has presented contrasting evidence about the role of perpetual features such as artifact appearance versus causal or inductive reasoning in chldren's category distinctions (e.g., function). The present project used a child-initiated inquiry...
Show moreOne of the most fundamental functions of human cognition is to parse an otherwise chaotic world into different kinds of things. The ability to learn what objects are and how to respond to them appropriately is essential for daily living. The literature has presented contrasting evidence about the role of perpetual features such as artifact appearance versus causal or inductive reasoning in chldren's category distinctions (e.g., function). The present project used a child-initiated inquiry paradigm to investigate how children conceptualize artifacts, specifically how they prioritize different types of information that typify not only novel but also familiar objects. Results underscore a hybrid model in which perceptual features and deeper properties act synergistically to inform children's artifact conceptualization. Function, however, appears to be the driving force of this relationship.
Show less - Date Issued
- 2011
- PURL
- http://purl.flvc.org/FAU/3320103
- Subject Headings
- Cognition in children, Child development, Reasoning in children, Reasoning (Psychology)
- Format
- Document (PDF)
- Title
- Women's rape avoidance: an evolutionary psychological perspective.
- Creator
- McKibbin, William F., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Women have recurrently faced the adaptive problem of rape over evolutionary history. Little research has investigated the potential evolved psychological mechanisms for rape avoidance that women may possess. Here I review evolutionary perspectives on rape avoidance. I follow this review with the results of two studies conducted to design a measure of women's rape avoidance, known as the Rape Avoidance Inventory (RAI). Study 1A included 99 women who self-reported acts they do or might do...
Show moreWomen have recurrently faced the adaptive problem of rape over evolutionary history. Little research has investigated the potential evolved psychological mechanisms for rape avoidance that women may possess. Here I review evolutionary perspectives on rape avoidance. I follow this review with the results of two studies conducted to design a measure of women's rape avoidance, known as the Rape Avoidance Inventory (RAI). Study 1A included 99 women who self-reported acts they do or might do specifically to avoid being raped. Study 1B included 144 women who filled out a preliminary inventory of rape avoidance behaviors. I used their responses to construct the RAI. In Study 3, I develop and test a number of hypotheses derived from evolutionary psychological theory, using data derived from the sample of women in Study 1B. I conclude by discussing limitations and possible future directions for rape avoidance research.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/1927315
- Subject Headings
- Rape, Psychological aspects, Sex differences (Psychology), Women, Violence against, Rape victims, Public opinion, Man-woman relationships, Evolutionary psychology
- Format
- Document (PDF)
- Title
- Women’s Plasticity During Childhood and their Influence on Rape-Avoidance Behaviors.
- Creator
- Penaloza, Sammy, Bjorklund, David F., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Evolutionary theory predicts that sexual coercion and rape are likely to occur in any species in which males are more aggressive, more eager to mate, more sexually assertive, and less discriminating in choosing a mate (Thornhill & Palmer, 2000). McKibbin and Shackelford (2011) state that males of many species have evolved strategies to sexually coerce and rape females. It is for this reason that researchers have speculated that several female traits or behaviors evolved to reduce the risks of...
Show moreEvolutionary theory predicts that sexual coercion and rape are likely to occur in any species in which males are more aggressive, more eager to mate, more sexually assertive, and less discriminating in choosing a mate (Thornhill & Palmer, 2000). McKibbin and Shackelford (2011) state that males of many species have evolved strategies to sexually coerce and rape females. It is for this reason that researchers have speculated that several female traits or behaviors evolved to reduce the risks of being raped (McKibbin & Shackelford, 2011). The rationale behind the proposed experiment examined whether parents’ childrearing practices and women’s plasticity during childhood may have influenced the development of psychological mechanisms in response to the recurrent adaptive problem of rape. Analyses showed that maternal support during childhood predicted how frequently rape-avoidance behaviors were exhibited by women as adults. Analyses also showed that father absence was related to earlier sexual activity but age of menarche did not predict and was not associated with any rape-avoidance behaviors.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004784
- Subject Headings
- Rape--Psychological aspects., Rape victims--Public opinion., Women--Violence against., Men--Sexual behavior., Men--Attitudes., Human behavior., Sex differences (Psychology), Evolutionary psychology.
- Format
- Document (PDF)
- Title
- WITHIN- AND ACROSS-LANGUAGE EFFECTS OF ORAL LANGUAGE SKILL AT SCHOOL ENTRY ON LATER ENGLISH AND SPANISH READING COMPREHENSION GROWTH AMONG EARLY BILINGUALS.
- Creator
- Giguere, David, Hoff, Erika, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Extensive evidence indicates that oral language skills at school entry predict later reading development among monolingual children. It is not clear if the effect is the same for bilingually developing children and whether their oral skills in one language can transfer to reading comprehension in the other. The current longitudinal study followed 72 Spanish-English bilingual children (42 girls, 30 boys) and examined the extent to which early oral language proficiency in English and in Spanish...
Show moreExtensive evidence indicates that oral language skills at school entry predict later reading development among monolingual children. It is not clear if the effect is the same for bilingually developing children and whether their oral skills in one language can transfer to reading comprehension in the other. The current longitudinal study followed 72 Spanish-English bilingual children (42 girls, 30 boys) and examined the extent to which early oral language proficiency in English and in Spanish were related to later reading comprehension development within- and across-languages. Multilevel models revealed significant within-language relations between oral language skills at 5 years and reading comprehension growth from 6 to 8 years in both English and Spanish. Additionally, English oral skill predicted Spanish reading comprehension, whereas Spanish oral skill was unrelated to English reading comprehension. Theoretical and practical implications of the findings are discussed.
Show less - Date Issued
- 2019
- PURL
- http://purl.flvc.org/fau/fd/FA00013311
- Subject Headings
- Bilingualism--Research, Reading comprehension, Bilingualism in children
- Format
- Document (PDF)
- Title
- Who dislikes whom: the characteristics of antipathy in adolescence.
- Creator
- Hafen, Christopher A., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
The current study examined the process by which adolescents choose who to dislike in a sample of Finnish 10th graders. Information was available for the adolescents on their victimization, bullying behavior, problem behavior, school burnout, school grades, and their depressive symptoms. The initial analysis consisted of assessing which characteristics made individuals more likely to dislike someone, after taking into account the characteristics of the individual being nominated. This analysis...
Show moreThe current study examined the process by which adolescents choose who to dislike in a sample of Finnish 10th graders. Information was available for the adolescents on their victimization, bullying behavior, problem behavior, school burnout, school grades, and their depressive symptoms. The initial analysis consisted of assessing which characteristics made individuals more likely to dislike someone, after taking into account the characteristics of the individual being nominated. This analysis found that individuals form antipathy for dissimilar others. This process is hypothesized to be a result of mechanisms of threat. The secondary analysis compared the characteristics of unilateral and mutual antipathies. This analysis found that mutual antipathies are characterized by elevated differences between individuals on victimization. These results identify and describe important aspects of the adolescent peer environment.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/2684308
- Subject Headings
- Attribution (Psychology), Adjustment (Psychology) in adolescence, Social interaction in adolescence, Interpersonal relationships in adolescence, Peer pressure in adolescence, Social conflict, Psychological aspects
- Format
- Document (PDF)
- Title
- Which Way is It? Spatial Navigation and the Genetics of Head Direction Cells.
- Creator
- Lora, Joan C., Stackman, Robert W., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
From locating a secure home, foraging for food, running away from predators, spatial navigation is an integral part of everyday life. Multiple brain regions work together to form a three-dimensional representation of our environment; specifically, place cells, grid cells, border cells & head direction cells are thought to interact and influence one another to form this cognitive map. Head direction (HD) cells fire as the animal moves through space, according to directional orientation of the...
Show moreFrom locating a secure home, foraging for food, running away from predators, spatial navigation is an integral part of everyday life. Multiple brain regions work together to form a three-dimensional representation of our environment; specifically, place cells, grid cells, border cells & head direction cells are thought to interact and influence one another to form this cognitive map. Head direction (HD) cells fire as the animal moves through space, according to directional orientation of the animal’s head with respect to the laboratory reference frame, and are therefore considered to represent the directional sense. Interestingly, inactivation of head direction cell-containing brain regions has mixed consequences on spatial behavior. Current methods of identifying HD cells are limited to in vivo electrophysiological recordings in a dry-land environment. We first developed a dry-land version of the MWM in order to carry out behavioral-recording paired studies. Additionally, to learn about HD cells function we quantified expression of neuronal activation marker (c-Fos), and L-amino acid transporter 4 (Lat4) in neurons found within the HD cell dense anterodorsal thalamic nucleus (ADN) in mice after exploratory behavior in an open field, or forward unidirectional movement on a treadmill. We hypothesize that the degree to which ADN neurons are activated during exploratory behavior is influenced by the range of heading directions sampled. Additionally, we hypothesize that c-Fos and Lat4 are colocalized within ADN neurons following varying amounts of head direction exposure. Results indicate that following free locomotion of mice in an open field arena, which permitted access to 360° of heading, a greater number of ADN neurons express c-Fos protein compared to those exposed to a limited range of head directions during locomotion in a treadmill. These findings suggest that the degree of ADN neuronal activation was dependent upon the range of head directions sampled. We observed a high degree of colocalization of c-Fos and Lat4 within ADN suggesting that Lat4 may be a useful tool to manipulate neuronal activity of HD cells. Identifying genetic markers specific to ADN helps provide an essential understanding of the spatial navigation system, and supports development of therapies for cognitive disorders affecting navigation.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00004931, http://purl.flvc.org/fau/fd/FA00004931
- Subject Headings
- Psychobiology., Spatial behavior in animals., Mice as laboratory animals., Navigation--Psychological aspects., Computational intelligence.
- Format
- Document (PDF)
- Title
- What's so fair about the status quo?: examining fairness criteria as moderators of system justification.
- Creator
- Martens, Nicholas J., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
System justification theorists have proposed that people are motivated to view their political, economic, and social circumstances as desirable, necessary, and fair (e.g., Jost, Nosek & Banaji, 2004). Despite more than 15 years of system justification research, the meaning of fairness within this context has not been investigated directly. Over the past several decades three major criteria have been identified as contributing to people's perceptions of fairness: distributive justice,...
Show moreSystem justification theorists have proposed that people are motivated to view their political, economic, and social circumstances as desirable, necessary, and fair (e.g., Jost, Nosek & Banaji, 2004). Despite more than 15 years of system justification research, the meaning of fairness within this context has not been investigated directly. Over the past several decades three major criteria have been identified as contributing to people's perceptions of fairness: distributive justice, procedural justice, and one's own idiosyncratic set of personal values. Focusing on the last two, we reasoned that values are represented more abstractly than is information about procedural fairness, and that the relative weight of values versus procedures should increase at higher levels of mental construal. Whereas information about procedures is often seen as providing a basis for the acceptance of undesirable outcomes, judgments based on personal conceptions of right and wrong are considered to be independent from "establishment, convention, rules, or authority" (Skitka & Mullen, 2008, p. 531), and are therefore unlikely to be used in a motivated defense of the status quo. We therefore hypothesized that system justification would be most likely to occur in conditions where procedures are most salient (i.e., at low levels of construal). However, despite using manipulations of the system justification motive that have previously been successful, and working with issues similar to those used in previous work, we were unable to produce the typical system justification pattern of results. Possible reasons for this are discussed.
Show less - Date Issued
- 2011
- PURL
- http://purl.flvc.org/FAU/3171722
- Subject Headings
- Social psychology, Social interaction, Justice (Philosophy), Social justice, Control (Psychology), Affect (Psychology)
- Format
- Document (PDF)
- Title
- Visual discrimination by C57BL/6J mice in water maze tasks: does size really matter?.
- Creator
- Buerger, Eric D., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
When interpreting how an animal "learns" discrimination tasks, strain capabilities must be considered, and it should be shown that they comprehend the task in a manner consistent with the given interpretation. A novel visual-discrimination (VD) task for relative-size-relations was used to examine visual cue use in C57BL/6J mice, which are shown to have biologically good vision and neurologically intact memory for VD tasks. Results suggest C57BL/6J strain may not be fully capable of relative...
Show moreWhen interpreting how an animal "learns" discrimination tasks, strain capabilities must be considered, and it should be shown that they comprehend the task in a manner consistent with the given interpretation. A novel visual-discrimination (VD) task for relative-size-relations was used to examine visual cue use in C57BL/6J mice, which are shown to have biologically good vision and neurologically intact memory for VD tasks. Results suggest C57BL/6J strain may not be fully capable of relative cue-size associations or even object recognition-based on a water maze VD task. This is in contrast to previous studies suggesting this mice strain is quite strong in visual skills and on VD tasks. Additionally, cue size and/or cue-pairings do appear to influence specific directional preferences or stereotyped behaviors as trainings continued, and these strategies shifted during novel probes. Future studies should assess how mice discriminate between objects and test rat's capabilities on this task.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/FAU/165670
- Subject Headings
- Visual discrimination, Form perception, Animal behavior, Simulation methods, Animals, Adaptation, Simulation methods
- Format
- Document (PDF)
- Title
- Verb Memory and Text Comprehension.
- Creator
- Khan, Lamiya, Kersten, Alan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Kersten, Earles, and Berger (2015) reported a distinction between two kinds of motion representations. Extrinsic motions involve the path of a person or object, with respect to an external frame of reference. Intrinsic motions involve the manner in which the various parts of a person or object move. They found that intrinsic motions are encoded and remembered with the corresponding actor performing the motions in a unitized memory representation. Extrinsic motions are encoded as separate...
Show moreKersten, Earles, and Berger (2015) reported a distinction between two kinds of motion representations. Extrinsic motions involve the path of a person or object, with respect to an external frame of reference. Intrinsic motions involve the manner in which the various parts of a person or object move. They found that intrinsic motions are encoded and remembered with the corresponding actor performing the motions in a unitized memory representation. Extrinsic motions are encoded as separate memory representations, making them more difficult to accurately associate with the correct actor. In the proposed experiment, I will examine the generality of this distinction in motion representation, and investigate whether the unitization of intrinsic motion with its corresponding actor occurs during reading comprehension tasks.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004799, http://purl.flvc.org/fau/fd/FA00004799
- Subject Headings
- Recollection (Psychology), Context effects (Psychology), Cognitive grammar., Semantics--Psychological aspects., Knowledge, Theory of., Linguistic analysis (Linguistics), Human information processing.
- Format
- Document (PDF)
- Title
- Using emotion-inducing film clips to measure emotional coordination.
- Creator
- Leong-Kee, Maureen Jane., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Synchronization research reveals that those who are able to coordinate behavior in time are more likely to feel positively towards one another. Unlike previous research that has taken a linear approach, I examine the dynamical nature of individuals' emotional coordination by investigating the overlap in their moment-to-moment emotional responses to positive and negative events in the form of film clips. By using the mouse program, I develop a new relationship paradigm and find that this...
Show moreSynchronization research reveals that those who are able to coordinate behavior in time are more likely to feel positively towards one another. Unlike previous research that has taken a linear approach, I examine the dynamical nature of individuals' emotional coordination by investigating the overlap in their moment-to-moment emotional responses to positive and negative events in the form of film clips. By using the mouse program, I develop a new relationship paradigm and find that this measure is able to capture the nuances of emotional responses, and, more importantly, it is able to distinguish between relationship partners versus pairs of strangers. However, I am unable to determine that emotional coordination, as determined by smaller differences in mouse program data between partners, is related to relationship quality, as measured by their level of liking and loving (for romantic partners only) towards each other and their future expectancy of the relationship.
Show less - Date Issued
- 2009
- PURL
- http://purl.flvc.org/FAU/367766
- Subject Headings
- Nonverbal communication, Interpersonal relations, Developmental psychology, Cognitive science, Sensitivity (Personal trait)
- Format
- Document (PDF)
- Title
- UNDERSTANDING THE OTHER-RACE EFFECT THROUGH EYE-TRACKING, EXPERIENCE, AND IMPLICIT BIAS.
- Creator
- Soethe, Elizabeth, Anzures, Gizelle, Florida Atlantic University, Department of Psychology, Charles E. Schmidt College of Science
- Abstract/Description
-
Face perception and recognition abilities develop throughout childhood and differences in viewing own-race and other-race faces have been found in both children (Hu et al., 2014) and adults (Blais et al., 2008). In addition, implicit biases have been found in children as young as six (Baron & Banaji, 2006) and have been found to influence face recognition (Bernstein, Young, & Hugenberg, 2007). The current study aimed to understand how gaze behaviors, implicit biases, and other-race experience...
Show moreFace perception and recognition abilities develop throughout childhood and differences in viewing own-race and other-race faces have been found in both children (Hu et al., 2014) and adults (Blais et al., 2008). In addition, implicit biases have been found in children as young as six (Baron & Banaji, 2006) and have been found to influence face recognition (Bernstein, Young, & Hugenberg, 2007). The current study aimed to understand how gaze behaviors, implicit biases, and other-race experience contribute to the other-race effect and their developmental effects. Caucasian children’s (5-10 years of age) and young adults’ scanning behaviors were recorded during an old/new recognition task using Asian and Caucasian faces. Participants also completed an Implicit Association Test (IAT) and a race experience questionnaire. Results found an own-race bias in both children and adults. Only adult’s IAT scores were significantly different from zero, indicating an implicit bias. Participants had a greater number of eye to eye fixations for Caucasian faces, in comparison to Asian faces and eye to eye fixations were greater in adults during encoding phases. Additionally, increased nose looking times were observed with age. Central attention to the nose may be indicative of a more holistic viewing strategy implemented by adults and older children. Participants spent longer looking at the mouth of Asian faces during encoding and test for older children and adults, but younger children spent longer looking at own-race mouths during recognition. Correlations between scanning patterns and implicit biases, and experience difference scores were also observed. Both social and perceptual factors seem to influence looking behaviors for own- and other-race faces and are undergoing changes during childhood.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013636
- Subject Headings
- Bias, Discrimination, Eye tracking, Face perception
- Format
- Document (PDF)
- Title
- Understanding narcissism and self-esteem in children: proposing a new conceptualization of narcissism.
- Creator
- Evans, Rachel., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
This study examined the empirical relationship between narcissism and self-esteem in an attempt to evaluate competing conceptualizations of narcissism. Participants were 236 children (mean age 11.3 years) in the fourth through eighth grades. Counter to earlier conceptions, which characterized narcissism as very high self-esteem, narcissism and self-esteem were slightly negatively correlated. Also, narcissism predicted several adjustment variables, including aggression. None of these...
Show moreThis study examined the empirical relationship between narcissism and self-esteem in an attempt to evaluate competing conceptualizations of narcissism. Participants were 236 children (mean age 11.3 years) in the fourth through eighth grades. Counter to earlier conceptions, which characterized narcissism as very high self-esteem, narcissism and self-esteem were slightly negatively correlated. Also, narcissism predicted several adjustment variables, including aggression. None of these relationships was mediated by self-esteem. Lastly, self-esteem moderated the relationship between narcissism and aggression in boys. Taken together, these lines of evidence point to a new conceptualization of narcissism, modeled after self-discrepancy theory, in which narcissism is conceptualized as grandiosity in the ideal self. Implications of this proposal and directions for future research are discussed.
Show less - Date Issued
- 2009
- PURL
- http://purl.flvc.org/FAU/186767
- Subject Headings
- Self-esteem in children, Narcissism, Philosophy, Identity (Psychology), Affect (Psychology), Self (Philosophy), Borderline personality disorders in children
- Format
- Document (PDF)
- Title
- Uncovering the role of the rodent dorsal hippocampus in spatial and object memory retrieval.
- Creator
- Rios, Lisa, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Male C7BL/6J mice were implanted with bilateral dorsal CA1 guide cannulae. After confirming that intrahippocampal microinfusion of muscimol impaired hippocampal function, demonstrated by impaired performance in the Morris water maze, the influence of intrahippocampal muscimol was tested in the Novel Object Recognition paradigm. During a test session 24 h after the last habituation/sample session, mice were presented with one familiar object and one novel object. Successful retention of object...
Show moreMale C7BL/6J mice were implanted with bilateral dorsal CA1 guide cannulae. After confirming that intrahippocampal microinfusion of muscimol impaired hippocampal function, demonstrated by impaired performance in the Morris water maze, the influence of intrahippocampal muscimol was tested in the Novel Object Recognition paradigm. During a test session 24 h after the last habituation/sample session, mice were presented with one familiar object and one novel object. Successful retention of object memory was inferred if mice spent more time exploring the novel object than the familiar object. Results demonstrate that muscimol infused into dorsal CA1 region prior to the test session eliminates novel object preference, indicating that the hippocampus is necessary for the retrieval of this non-spatial memory - a topic that has garnered much debate. Understanding the similarities between rodent and human hippocampal function could enable future animal studies to effectively answer questions about diseases and disorders affecting human learning and memory.
Show less - Date Issued
- 2011
- PURL
- http://purl.flvc.org/FAU/3172696
- Subject Headings
- Rodents as laboratory animals, Memory, Research, Cellular signal transduction, Cognitive neuroscience, Hippocampus (Brain), Space perception
- Format
- Document (PDF)
- Title
- Types of Intrusions in Verbal Fluency Tasks in Mild Cognitive Impairment and Dementia: A Longitudinal Analysis.
- Creator
- Shihadeh, Layaly, Rosselli, Monica, Florida Atlantic University, Department of Psychology, Charles E. Schmidt College of Science
- Abstract/Description
-
Research shows intrusions in memory tests can predict cognitive impairment in abnormal aging. However, there still is a need for additional research regarding the association of intrusions in verbal fluency tasks and clinical diagnosis of mild cognitive impairment, and dementia. The aim of my master’s thesis research is to determine if there is an association between intrusion totals in verbal fluency tasks and diagnosis, longitudinally (across 3 years), if there are significant differences...
Show moreResearch shows intrusions in memory tests can predict cognitive impairment in abnormal aging. However, there still is a need for additional research regarding the association of intrusions in verbal fluency tasks and clinical diagnosis of mild cognitive impairment, and dementia. The aim of my master’s thesis research is to determine if there is an association between intrusion totals in verbal fluency tasks and diagnosis, longitudinally (across 3 years), if there are significant differences between category and phonemic fluency tasks in intrusion total scores, and if progression from CN to MCI or dementia and from MCI to dementia can be indicated through differences in intrusion scores. Results indicated that intrusions are significantly associated with diagnosis in Phonemic fluency tasks, however this was not the case in progressors versus non-progressors.
Show less - Date Issued
- 2022
- PURL
- http://purl.flvc.org/fau/fd/FA00014042
- Subject Headings
- Mild cognitive impairment, Dementia, Verbal ability
- Format
- Document (PDF)
- Title
- Types of Errors in a Memory Interference Task in Normal and Abnormal Aging.
- Creator
- Torres Solano, Valeria Lucia, Rosselli, Monica, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
The types of intrusion errors (Prior List, Semantically Related, and Unrelated) made on the LASSI-L verbal memory task were compared across three diagnostic groups (N = 160, 61 % female), Cognitively Normal (CN), amnestic Mild Cognitive Impairment (aMCI), and Alzheimer’s disease (AD). Errors related to Proactive, Recovery from Proactive, and Retroactive Interference were also analyzed, as well as the relationship of errors to Amyloid load, a biomarker of AD. Results suggest that the types of...
Show moreThe types of intrusion errors (Prior List, Semantically Related, and Unrelated) made on the LASSI-L verbal memory task were compared across three diagnostic groups (N = 160, 61 % female), Cognitively Normal (CN), amnestic Mild Cognitive Impairment (aMCI), and Alzheimer’s disease (AD). Errors related to Proactive, Recovery from Proactive, and Retroactive Interference were also analyzed, as well as the relationship of errors to Amyloid load, a biomarker of AD. Results suggest that the types of error made indicated the level of cognitive decline. It appears that as deficits increase, impaired semantic networks result in the simultaneous activation of items that are semantically related to LASSI-L words. In the aMCI group, providing a semantic cue resulted in an increased production of Semantically Related intrusions. Unrelated intrusions occurred rarely, although, a small number occurred even in the CN group, warranting further investigation. Amyloid load correlated with all intrusion errors.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00005982
- Subject Headings
- Memory--Age factors, Semantic memory, Amyloid
- Format
- Document (PDF)
- Title
- Traveling Waves of Dominance in Motion-Induced Blindness.
- Creator
- Cox, Dustin, Hong, Sang Wook, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
In the present study, it was examined whether the spatiotemporal dynamics of transitions towards target dominance in motion-induced blindness (MIB) were wave-like, similar to those in binocular rivalry. The spatiotemporal dynamics of transitions towards dominance in MIB were further compared with those in binocular rivalry to reveal a potential neural locus of MIB. Across a series of experiments, the relationship between target length, stimulus structure, presentation location and the latency...
Show moreIn the present study, it was examined whether the spatiotemporal dynamics of transitions towards target dominance in motion-induced blindness (MIB) were wave-like, similar to those in binocular rivalry. The spatiotemporal dynamics of transitions towards dominance in MIB were further compared with those in binocular rivalry to reveal a potential neural locus of MIB. Across a series of experiments, the relationship between target length, stimulus structure, presentation location and the latency for circular arc segment-shaped targets to reappear was examined, respectively. It was found that target reappearance durations increase with target length, as if they reappear in a gradual, wavelike fashion. Target reappearance durations were decreased for collinear compared to radial targets, but they were not influenced by the location of target presentation. The results suggest MIB target reappearances are associated with traveling waves of dominance, and early visual cortex is a likely neural substrate in which these wave-like transitions occur.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004704, http://purl.flvc.org/fau/fd/FA00004704
- Subject Headings
- Binocular rivalry, Binocular vision, Visual pathways, Visual perception
- Format
- Document (PDF)
- Title
- A transient mechanism for the perception of apparent motion.
- Creator
- Gilroy, Lee Alan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
This study investigated the viability of a transient mechanism for the detection of counter-changing luminance, argued by Hock, et al. (2002) to be the informational basis for the perception of apparent motion. A series of experiments verified assumptions of the proposed mechanism and provided additional support for counter-changing luminance as the basis for apparent motion perception. It was found that: (1) The likelihood of perceiving apparent motion is best predicted by the product of...
Show moreThis study investigated the viability of a transient mechanism for the detection of counter-changing luminance, argued by Hock, et al. (2002) to be the informational basis for the perception of apparent motion. A series of experiments verified assumptions of the proposed mechanism and provided additional support for counter-changing luminance as the basis for apparent motion perception. It was found that: (1) The likelihood of perceiving apparent motion is best predicted by the product of local changes in luminance. This provided the basis for the multiplicative combination of subunit responses in the proposed mechanism (i.e. there is no motion signaled without coincident activation of both subunits). (2) When a brief interval of time separates a sequence of luminance onsets and offsets, or a sequence of luminance offsets, at a single element location, subunits exhibit summation of excitatory/inhibitory and excitatory/excitatory responses, respectively. This was consistent with the output of each subunit being determined by its biphasic temporal impulse response. (3) Apparent motion is specified only when there is a luminance offset at one location accompanied by a luminance onset at another location, and the likelihood of perceiving motion decreases with increases in the interval of time (ISI) separating the luminance offset from the luminance onset. Evidence that motion is not perceived beyond a limited range of ISI values indicated that the subunits respond transiently to luminance change. Accordingly, the effects of (ISI) are attributed to a reduction in the temporal coincidence of transient responses. This was supported by evidence that motion can be perceived when a luminance onset (indicating the end of the motion path) occurs before a luminance offset (indicating the start of the motion path). Computational simulations based on the product of transient responses to luminance offsets and onsets provide good qualitative matches to the experimental findings.
Show less - Date Issued
- 2002
- PURL
- http://purl.flvc.org/fcla/dt/12004
- Subject Headings
- Psychology, Experimental, Psychology, Cognitive
- Format
- Document (PDF)
- Title
- Trait Mindfulness in Children: The Effects on Stress Reactivity and Self-Regulation.
- Creator
- Marchesani, Alexandra, Jones, Nancy Aaron, Florida Atlantic University, Department of Psychology, Charles E. Schmidt College of Science
- Abstract/Description
-
Recent success of mindfulness-based interventions in adult and clinical populations, as well as in classroom settings, has spurred the need for a more thorough understanding of mindfulness as a trait that can affect early development of self-regulatory characteristics. The current study used previously collected data on 4th and 5th graders to explore the relationships between trait mindfulness, self-regulation, and stress reactivity, measured using cortisol levels. Self-regulation was...
Show moreRecent success of mindfulness-based interventions in adult and clinical populations, as well as in classroom settings, has spurred the need for a more thorough understanding of mindfulness as a trait that can affect early development of self-regulatory characteristics. The current study used previously collected data on 4th and 5th graders to explore the relationships between trait mindfulness, self-regulation, and stress reactivity, measured using cortisol levels. Self-regulation was measured using effortful control (attention, inhibitory control, and activation control), conscientiousness, agreeableness, negative emotion regulation, and openness to experience. Cortisol findings were significant for negative emotion regulation. Results revealed several significant positive associations between trait mindfulness and several self-regulatory characteristics among people who did and did not respond to a stressor. Further research is necessary to tease apart the unique contribution of individual self-regulatory characteristics, including trait mindfulness, on stress reactivity.
Show less - Date Issued
- 2023
- PURL
- http://purl.flvc.org/fau/fd/FA00014270
- Subject Headings
- Mindfulness (Psychology), Child development, Child psychology, Self-management (Psychology) for children
- Format
- Document (PDF)
- Title
- Tracking infant attention to talking faces.
- Creator
- Tift, Amy H., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
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Speech perception plays an important role in how infants begin to produce speech. This study aims to understand how changes in infant selective attention to various parts of talking faces guides their understanding of speech and subsequent production. In this study, we tracked infant (4-12 months of age) and adult gaze patterns to determine where on a face they attend, when hearing and seeing the face speak in either their native (English) or a non-native language (Spanish). We also tracked...
Show moreSpeech perception plays an important role in how infants begin to produce speech. This study aims to understand how changes in infant selective attention to various parts of talking faces guides their understanding of speech and subsequent production. In this study, we tracked infant (4-12 months of age) and adult gaze patterns to determine where on a face they attend, when hearing and seeing the face speak in either their native (English) or a non-native language (Spanish). We also tracked infant selective attention to moving-silent and silent-static faces, to determine if this would result in different patterns of attention. The findings suggest that there are two shifts in infant attention. The first shift occurs between four and eight months of age, with infants shifting their eyes to the mouth of the talking face. The second shift occurs around twelve months of age, when infants begin to return their gaze back to the eye region when hearing and seeing their native language, but continue to attend to the mouth region when hearing and seeing the non-native language. Overall, the results of this study suggest that changes in selective attention to talking faces guides the development of speech production and is dependent on early language experience.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3359157
- Subject Headings
- Child development, Visual perception in infants, Cognition in infants, Interpersonal communication in infants, Language acquisition
- Format
- Document (PDF)
- Title
- TOP-DOWN EFFECTS OF PERCEPTUAL GROUPING ON THE PERCEPTION OF MOTION.
- Creator
- Datta, Debarshi, Hock, Howard S., Florida Atlantic University, Department of Psychology, Charles E. Schmidt College of Science
- Abstract/Description
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Ullman (1979) has proposed a measurement metric, which he termed “affinity." He described affinity as a certain similarity measure between successively presented surfaces as it affects the perception of apparent motion between the surfaces. Later, the concept of “affinity” has been extended; it entails that how the perception of motion within a surface is affected by its grouping strength with adjacent surfaces (Hock and Nichols, 2012). It has been found that the more attributes, that are...
Show moreUllman (1979) has proposed a measurement metric, which he termed “affinity." He described affinity as a certain similarity measure between successively presented surfaces as it affects the perception of apparent motion between the surfaces. Later, the concept of “affinity” has been extended; it entails that how the perception of motion within a surface is affected by its grouping strength with adjacent surfaces (Hock and Nichols, 2012). It has been found that the more attributes, that are shared by the adjacent surfaces, the greater the likelihood of their being grouped together. However, Ullman (1979) suggested that the relative affinities of pairs of surfaces could determine the solutions for the motion correspondence problem (when more than one motion path is possible). However, it has remained unknown whether the effects of affinity on solutions to the correspondence problem are due to its effects on a single surface apparent motion strength or pre-selection biases; i.e., the top-down effects of perceptual grouping favoring the perception of motion in one direction as opposed to other competing directions. In the current study, it has been confirmed that motion within a surface is affected by its affinity with adjacent surfaces. The current study also confirmed that affinity has a small, but significant effect on motion strength when motion surfaces are presented in a single surface apparent motion configuration, evidence for top-down effects in which motion strength can be affected by affinity. In motion correspondence problem, affinity affects the perceived motion direction due to competition is consistent with the solution to the motion correspondence problem being affected by the relative affinity-determined strength of competing motion signals. But it is seen that there is strong affinity is due to preselection identity biases. To conclude, in motion correspondence problem, stronger motion is perceived between the two similar surfaces is due to pre-selection biases resulting from the perceptual grouping of surfaces with the greatest affinity; i.e., the top-down effects favoring the perception of motion in one direction as opposed to other competing directions.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013567
- Subject Headings
- Motion Perception, Perceptual grouping
- Format
- Document (PDF)