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Articles 61 - 90 of 148

Full-Text Articles in Cognitive Psychology

The Biological, Psychological, Cognitive, And Social Perspectives On Aging: The Design Of A Healthy Aging Program For Older Adults, Melissa Santiago Jun 2020

The Biological, Psychological, Cognitive, And Social Perspectives On Aging: The Design Of A Healthy Aging Program For Older Adults, Melissa Santiago

Dissertations

Aging is an inevitable process, accompanied by changes in physiological, cognitive, psychological, and social facets. Researchers have investigated the physiological, cognitive, psychological, and social risk factors associated with aging and have encouraged the use of physical activity, cognitive training, and dietary interventions to alleviate risk factors. However, holistic programs dedicated to promoting successful aging among older adults are uncommon. This review sought to promote successful aging by identifying physiological, cognitive, psychological, and social risk factors that affect older adults and develop a comprehensive program to holistically mitigate these risk factors. Risk factors associated with unsuccessful aging include the development of …


Using Object-Choice Tasks To Investigate Sensory Perception In Sunda Pangolins (Manis Javanica), Joshua Dipaola May 2020

Using Object-Choice Tasks To Investigate Sensory Perception In Sunda Pangolins (Manis Javanica), Joshua Dipaola

Theses and Dissertations

Pangolins are one of the most heavily poached, yet least understood mammals in the world. In this study, we used an object-choice task to assess the ecological relevance and use of sensory information in Sunda pangolin foraging behavior. This is the first controlled experiment on pangolin behavior to our knowledge.


Off-Topic Verbosity And Sustained Attention Among Young Adult And Older Adult Age Cohorts, Jessica H. Helphrey May 2020

Off-Topic Verbosity And Sustained Attention Among Young Adult And Older Adult Age Cohorts, Jessica H. Helphrey

Psychology and Counseling Theses

Off-topic verbosity (OTV) is tangential discourse with excessive and irrelevant information. Older adults have been historically labeled as having high OTV, and research has suggested that high OTV in older adults may be linked with cognitive decline. While past studies have utilized brief cognitive measures to further expound upon the links between cognition and OTV, studies have lacked consistency and lengthy measures. This study sought to elucidate the relationship between OTV and cognition in both older adult and young adult age cohorts utilizing a sustained attention measure. Young adults (n = 61; age range: 18-28, M = 20.57, SD = …


The Project Talent Twin And Sibling Study: Zygosity And New Data Collection, Carol A. Prescott, Ellen E. Walters, Thalida Em Arpawong, Catalina Zavala, Tara L. Gruenewald, Margaret Gatz Feb 2020

The Project Talent Twin And Sibling Study: Zygosity And New Data Collection, Carol A. Prescott, Ellen E. Walters, Thalida Em Arpawong, Catalina Zavala, Tara L. Gruenewald, Margaret Gatz

Psychology Faculty Articles and Research

The Project Talent Twin and Sibling (PTTS) study includes 4481 multiples and their 522 nontwin siblings from 2233 families. The sample was drawn from Project Talent, a U.S. national longitudinal study of 377,000 individuals born 1942–1946, first assessed in 1960 and representative of U.S. students in secondary school (Grades 9–12). In addition to the twins and triplets, the 1960 dataset includes 84,000 siblings from 40,000 other families. This design is both genetically informative and unique in facilitating separation of the ‘common’ environment into three sources of variation: shared by all siblings within a family, specific to twin-pairs, and associated with …


The Longitudinal Parallel Process Analysis Of Biomarkers Of Oxidative Stress, Symptom Clusters, And Cognitive Function In Children With Leukemia, Mary C Hooke, Daniel Hatch, Marilyn J Hockenberry, Susan Whitman, Ida Moore, David Montgomery, Kari Marano, Pauline Mitby, Michael E Scheurer, Olga Taylor, Wei Pan Jan 2020

The Longitudinal Parallel Process Analysis Of Biomarkers Of Oxidative Stress, Symptom Clusters, And Cognitive Function In Children With Leukemia, Mary C Hooke, Daniel Hatch, Marilyn J Hockenberry, Susan Whitman, Ida Moore, David Montgomery, Kari Marano, Pauline Mitby, Michael E Scheurer, Olga Taylor, Wei Pan

Faculty, Staff and Students Publications

Background: During treatment for acute lymphoblastic leukemia (ALL), children report co-occurring symptoms of fatigue, sleep disturbance, pain, nausea, and depression as a symptom cluster. Central nervous system–directed ALL therapies also put children at risk for cognitive impairments. Cancer therapies can cause an increase in oxidative stress, which may contribute to treatment-related symptoms. This study examined the longitudinal relationships between biomarkers of oxidative stress in the cerebrospinal fluid, the Childhood Cancer Symptom Cluster–Leukemia (CCSC-L), and cognition, in children over the first year of ALL treatment. Methods: Glutathione (GSH) biomarkers of oxidative stress were measured in cerebrospinal fluid collected during treatment lumbar …


The Role Of Gamma Oscillations And Cortical Inhibition In The Development Of Working Memory In Adolescence, Christopher P. Walker Dec 2019

The Role Of Gamma Oscillations And Cortical Inhibition In The Development Of Working Memory In Adolescence, Christopher P. Walker

Dissertations and Theses (Open Access)

Adolescence is a dynamic period of social, cognitive, and biological changes. In particular, working memory, the ability to actively encode and maintain information over a short period of time, develops early in childhood and gradually increases in capacity and stability during adolescence. The precise neurophysiological mechanism by which working memory capacity increases during adolescence is unclear. The objective of this investigation was to evaluate the role of cortical gamma-band (> 30 Hz) oscillations—which are associated with working memory in adults—for the development of working memory capacity in adolescents, and to identify the extent to which the temporal profile of gamma-aminobutyric …


Across Continents And Demographics, Unpredictable Maternal Signals Are Associated With Children's Cognitive Function, Elyssia Poggi Davis, Riikka Korja, Linnea Karlsson, Laura Glynn, Curt A. Sandman, Brian Vegetabile, Eeva-Leena Kataja, Saara Nolvi, Eija Sinervä, Juho Pelto, Hasse Karlsson, Hal S. Stern, Tallie Z. Baram Jul 2019

Across Continents And Demographics, Unpredictable Maternal Signals Are Associated With Children's Cognitive Function, Elyssia Poggi Davis, Riikka Korja, Linnea Karlsson, Laura Glynn, Curt A. Sandman, Brian Vegetabile, Eeva-Leena Kataja, Saara Nolvi, Eija Sinervä, Juho Pelto, Hasse Karlsson, Hal S. Stern, Tallie Z. Baram

Psychology Faculty Articles and Research

Background

Early life experiences have persisting influence on brain function throughout life. Maternal signals constitute a primary source of early life experiences, and their quantity and quality during sensitive developmental periods exert enduring effects on cognitive function and emotional and social behaviors. Here we examined if, in addition to established qualitative dimensions of maternal behavior during her interactions with her infant and child, patterns of maternal signals may contribute to the maturation of children's executive functions. We focused primarily on effortful control, a potent predictor of mental health outcomes later in life.

Methods

In two independent prospective cohorts in Turku, …


Home-Based Cognitive Monitoring: The Role Of Personality And Predictors Of Adherence And Satisfaction, Nasreen A. Sadeq Jul 2019

Home-Based Cognitive Monitoring: The Role Of Personality And Predictors Of Adherence And Satisfaction, Nasreen A. Sadeq

USF Tampa Graduate Theses and Dissertations

Over the last several decades, a growing awareness of the benefits of regular screening for common health conditions, such as cancer and cardiovascular diseases, has paved the way for preventative screenings to become routine in medical settings. Given that cognitive impairment is frequently reported as the number one worry of older adults, home-based cognitive monitoring may be an innovative solution that allows middle aged and older adults to take an active role in monitoring an important aspect of their health. Although several home-based cognitive monitoring programs have been validated for use in clinical and home-based settings, the Cogstate Brief Battery …


Cognitive Intra-Individual Variability: The Effects Of Affect In A Healthy Young Adult Sample, Tovah M.D. Cowan Jun 2019

Cognitive Intra-Individual Variability: The Effects Of Affect In A Healthy Young Adult Sample, Tovah M.D. Cowan

LSU Master's Theses

Cognition is foundational to our experience of the world, but also to how psychologists understand dysfunctions. Cognitive impairment is a feature of a variety of mental disorders, but traditional assessment measures have key limitations in prediction and classification. A proposed alternative is cognitive intraindividual variability (cIIV), which is suggested to measure cognitive control or neural inefficiencies, fluctuating within a task, or over short periods of time. cIIV has been shown to be more sensitive in classification for a variety of conditions than overall performance, including in affective disorders. Further, some research suggests that cIIV is related to self-report cognitive abilities, …


The Effects Of Working Memory Capacity And Trait Anxiety On Visual Short-Term Memory Performance, Celene Gonzalez Jun 2019

The Effects Of Working Memory Capacity And Trait Anxiety On Visual Short-Term Memory Performance, Celene Gonzalez

Electronic Theses, Projects, and Dissertations

Anxiety is of importance within the field of cognition because it is often associated with adverse effects on attention, information processing, learning and memory (Eysenck, 1992, 2007). In existing literature, it has been reported that trait anxiety hinders cognitive performance (i.e., working memory capacity WMC). However, the relationship between trait anxiety and cognitive performance might be moderated by working memory capacity (WMC). For example, Owens (2014) reported that trait anxiety was negatively correlated with cognitive performance in the low WMC group and positively correlated to cognitive performance in the high WMC group. Although, past research on the working memory system …


The Epistemic And Psychological Mechanisms Perpetuating Racism Within The Criminal Justice System, Danielle Walker Apr 2019

The Epistemic And Psychological Mechanisms Perpetuating Racism Within The Criminal Justice System, Danielle Walker

Theses

Abstract

Many attempts have been made by philosophers, political activists, psychologists, historians, social advocates, and others to explain the mechanisms at play in the perpetuation and resulting manifestations of systemic and institutional racism. On one side of the debate there lies a theory that there is an epistemic failure at the root of racial bias towards Blacks, white ignorance, a collective amnesia regarding what has and does take place in society, as it pertains to their oppression and isolation, like the view of philosopher Charles W. Mills. According to Mills, this type of ignorance, or non-knowing, is a cognitive phenomenon …


Evaluating Theories Of Bilingual Language Control Using Computational Models, Mark D. Lowry Apr 2019

Evaluating Theories Of Bilingual Language Control Using Computational Models, Mark D. Lowry

USF Tampa Graduate Theses and Dissertations

Bilingual language control refers to how bilinguals are able to speak exclusively in one language without the unintended language intruding. Two prominent verbal theories of bilingual language control have been proposed by researchers: the inhibitory control model (ICM) and the lexical selection mechanism model (LSM). The ICM posits that domain-general inhibition is employed in order to suppress the unintended language’s activation. The LSM posits that inhibition is not used; rather a lexical selection mechanism targets only the intended language’s words. In order to better test the theories’ hypotheses, I developed computational models to estimate participants’ reaction times when naming in …


Object Permanence In Asian Elephants (Elephas Maximus), Dalia Miller Feb 2019

Object Permanence In Asian Elephants (Elephas Maximus), Dalia Miller

Theses and Dissertations

This study investigated object permanence in Asian elephants (Elephas maximus) using visible and invisible test paradigms with single and multiple object displacements. Elephants were predicted to succeed, demonstrating a capacity for object permanence and for using vision in a cognitive task. Study outcomes supported these predictions.


Manipulating Belief Bias Across The Lifespan, William D. Carney Jan 2019

Manipulating Belief Bias Across The Lifespan, William D. Carney

Williams Honors College, Honors Research Projects

In today’s political climate, when basic facts and reasoning are seemingly up for debate, it is increasingly important to be able to identify well-reasoned arguments, regardless of one’s political leanings, and to retain this skill throughout the lifespan. Research has shown, however, a persistent belief bias—a tendency to judge an argument’s validity based on its conclusion’s agreement with one’s beliefs, rather than its logical quality. Other findings suggest that belief bias can be reduced by instruction to avoid belief bias. The current project seeks to explore whether older adults, believed to be more prone to biased reasoning, respond differently to …


Phonetic Convergence And Auditory Imagery In Reading, Josue E. Rodriguez Jan 2019

Phonetic Convergence And Auditory Imagery In Reading, Josue E. Rodriguez

Cal Poly Humboldt theses and projects

This study aimed to address whether phonetic convergence (speech imitation) and auditory imagery in reading are fundamentally governed by the same process — episodic encoding (c.f., Goldinger, 1998). A set of participants (talkers; N = 12) were recorded speaking sentences at a baseline level. Talkers were then exposed model speaker with either a fast or slow speech rate and then engaged in a reading phase where they read sentences thought to be written by that speaker. If episodic encoding predicts effects of phonetic convergence and auditory imagery in reading style, then talkers should be influenced by a speaker …


How Instruction, Math Anxiety, And Math Achievement Affect Learning A Novel Math Task: Evidence For Better Instruction, Amy Jane Mcauley Dec 2018

How Instruction, Math Anxiety, And Math Achievement Affect Learning A Novel Math Task: Evidence For Better Instruction, Amy Jane Mcauley

UNLV Theses, Dissertations, Professional Papers, and Capstones

The primary goal of this paper is to test how math anxiety, achievement, and instruction affect learning a novel math task. Currently, most research measures achievement and math anxiety on previously learned tasks. A two-part study was proposed to measure the effects of math anxiety on learning modular arithmetic (MA), a novel math task that involves subtraction and division. Participants of varying degrees of anxiety and achievement were randomly assigned to either a specific or vague instruction condition. Participants were either taught how to solve the task or given minimal information about how to solve the task. Before moving on, …


Circumventing Spatio-Numeric Biases Through Non-Numeric Assessments Of Perceived Causal Strength, Daniel William Czarnowski Dec 2018

Circumventing Spatio-Numeric Biases Through Non-Numeric Assessments Of Perceived Causal Strength, Daniel William Czarnowski

Seton Hall University Dissertations and Theses (ETDs)

Knowledge of cause and effect allows individuals to meaningfully interpret the events they perceive in the world, and the understanding of causality is thought to be grounded in the understanding of forces (Wolf, Ritter, & Holmes, 2014). Previous research has linked handedness with both the ability to exert force (e.g., Linkenauger et al., 2005) and causal learning (e.g., Goedert & Czarnowski, 2017). Historically, number lines have been used to assess causality, but because handedness has a strong spatial element, SNARC effects may influence judgments (Fias, 1996). The current experiment replicates previous work by Goedert and Czarnowski (2017) but changes the …


The Cognitive Effects Of Late Bilingualism On Executive Functions: Lifelong Benefits, Rachel Casper Nov 2018

The Cognitive Effects Of Late Bilingualism On Executive Functions: Lifelong Benefits, Rachel Casper

Intuition: The BYU Undergraduate Journal of Psychology

Late bilinguals, those who learn a language past the critical period, are often thought to not receive much benefits from their language learning in comparison to their early bilingual counterparts. A large of body of recent research suggests otherwise. Late bilinguals receive the same cognitive benefits as early bilinguals; these benefits are in higher levels of executive functions, specifically in inhibitory control and attentional switching. Higher levels of executive functions assist learners in improving their mental processing and cognitive health over the course of their lifetime. Aging bilinguals have greater cognitive health due to more white and gray matter density. …


Validation Of The Barkley Deficits Of Executive Functioning Scale-Short Form, Brian Sheble Oct 2018

Validation Of The Barkley Deficits Of Executive Functioning Scale-Short Form, Brian Sheble

Dissertations

The Barkley Deficits of Executive Functioning-Short Form (BDEFS-SF) is a short rating scale measuring executive functioning in adults. The BDEFS-SF was developed using the 5 highest loading questions from the BDEFS-LF. Consequently, the psychometric qualities of the BDEFS-SF were not investigated using formal methods. In this study, the psychometric attributes of the BDEFS-SF were examined using two separate but similar groups. The first group of 264 men and women aged 18-35 years old completed the BDEFS-SF via an internet survey. The second group of 36 men and women aged 18-35 years old completed the BDEFS-SF and individualized assessments of executive …


Gene-Environment Interaction: Brain-Derived Neurotrophic Factor (Bdnf) As A Moderating Factor For The Effects Of Exercise And Diet On Cognitive And Mental Health: The Cache County Study On Memory In Aging, Chelsea L. Sanders Aug 2018

Gene-Environment Interaction: Brain-Derived Neurotrophic Factor (Bdnf) As A Moderating Factor For The Effects Of Exercise And Diet On Cognitive And Mental Health: The Cache County Study On Memory In Aging, Chelsea L. Sanders

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Cache County Study on Memory in Aging, funded by the National Institute on Aging, studied longitudinal changes in memory and aging over 12 years’ follow-up in a population-based sample of 5,092 older adults in semirural Cache County, UT. Among the extensive interview procedures, researchers collected information regarding the participants’ demographics, health, genetic factors, diet, physical activity, and cognitive abilities. This study has allowed researchers to investigate how genetic and modifiable lifestyle factors interact to predict health, cognitive function, and psychological wellbeing in older adults.

Diet and exercise are important lifestyle factors in maintaining cognitive health and psychological wellbeing throughout …


What Are The Overall Benefits Of Dance Improvisation, And How Do They Affect Cognition And Creativity?, Carley Wright Jul 2018

What Are The Overall Benefits Of Dance Improvisation, And How Do They Affect Cognition And Creativity?, Carley Wright

Honors College Theses

The purpose of this thesis is to define the terms improvisation, cognition, and creativity, and therefore find the direct correlation between all three, and how they can all be involved within dance. The main intention is to determine whether or not improvisational dance can positively influence one’s creative mindset, thus improving the cognitive learning process. Furthermore, it is to discover if the development of a creative mindset can be established through dance improvisation at an early age. In this exploration, the majority of my research will come from the examination of previously conducted experiments, as well as guiding and observing …


The Immediate And Long-Lasting Cognitive Consequences Of Adolescent Chronic Sleep Restriction, Kerry Howard May 2018

The Immediate And Long-Lasting Cognitive Consequences Of Adolescent Chronic Sleep Restriction, Kerry Howard

Seton Hall University Dissertations and Theses (ETDs)

Adolescence is a critical developmental period. An important change that occurs in adolescence is the neurological maturation for adult-type cognitive abilities. Research has linked adequate sleep quantity to successful learning and memory capabilities. However, due to a shift in sleep timing drive in adolescence, in combination with early awakening for school, the adolescent population is experiencing chronic sleep restriction (CSR). What repercussions to long-term memory capabilities could CSR in adolescence have immediately and are the consequences long-lasting? The present study modeled human adolescent CSR in rats through four hours of sleep deprivation for five days, followed by two days of …


Examining The Influence Of Executive Resources And Mathematical Abilities On Framing Biases, Gabriel Allred May 2018

Examining The Influence Of Executive Resources And Mathematical Abilities On Framing Biases, Gabriel Allred

UNLV Theses, Dissertations, Professional Papers, and Capstones

The finding that the presentation of a choice (i.e., either as a loss or a gain) can affect and bias our willingness to engage in risk is one of the paramount findings of behavioral economics. First discussed by Tversky and Kahneman (1981), the framing effect demonstrates that when given two choices framed as a loss, we tend to become risk seeking. However, when the exact same outcome is presented as a gain, we become risk averse, choosing the more conservative option, regardless of the actual expected value. The effect is not limited to general research samples but has been demonstrated …


Neurotracker Cognitive Function And Its Relationship To Gpa In College Students, Justin Tran, Caroline Gallagher Poehls May 2018

Neurotracker Cognitive Function And Its Relationship To Gpa In College Students, Justin Tran, Caroline Gallagher Poehls

Honors Thesis

Abstract

Introduction: The NeuroTracker system is a training tool used to enhance one’s cognitive abilities. It has been previously tested to improve athletic performance and core cognitive abilities in a variety of populations, but it has yet to be used as a cognitive test to examine its ability to distinguish academic ability in college students. The purpose of this study was to examine the relationships between a student’s grade point average (GPA), major, minutes exercised, and visual tracking speed utilizing the NeuroTracker System.

Methods: Forty-five students volunteered for the study (20 male and 25 female, 20.2±1.09years, ht=170.44±9.48cm, wt=70.98±15.66kg) and were …


A Study Of Flight Simulation Training Time, Aircraft Training Time, And Pilot Competence As Measured By The Naval Standard Score, Aaron D. Judy Apr 2018

A Study Of Flight Simulation Training Time, Aircraft Training Time, And Pilot Competence As Measured By The Naval Standard Score, Aaron D. Judy

Doctor of Education (Ed.D)

The purpose of the study was to investigate the relationships between US Navy T-45C flight simulation training time, actual aircraft training time, and intermediate and advanced jet pilot competence as measured by the Naval Standard Score (NSS). Examining the relationships between US Navy T-45C flight simulation time and actual aircraft flight time may provide further information on flight simulation training versus actual aircraft training to aviation authorities, flight instructors, the military aviation community, the commercial aviation community, and academia. The study was non-experimental, correlational, causal-comparative with an emphasis upon the establishment of mathematic and predictive relationships using archival data from …


Memory Of Words: A Categorization Task, Paulina Maxim Jan 2018

Memory Of Words: A Categorization Task, Paulina Maxim

Honors Undergraduate Theses

Through the years, the Deese-Roediger-McDermott Paradigm has demonstrated to be a useful method of observing false memories from semantically related word lists. The present study was conducted fully online and measured memory performance dependent on categorization of words by using groups, as well as dragging words across the page as a form of interaction. In a 2 (Categorized, Non-Categorized) x 2 (Interactive, Non-Interactive) between-subject factorial experiment, 56 undergraduate students were shown 18 different lists of 15 associative words to be studied, one list at a time. Participants were given a free recall test immediately after studying each individual list. Participants …


Score One For Jazz: Working Memory In Jazz And Classical Musicians, Bryan E. Nichols, Clemens Wöllner, Andrea R. Halpern Jan 2018

Score One For Jazz: Working Memory In Jazz And Classical Musicians, Bryan E. Nichols, Clemens Wöllner, Andrea R. Halpern

Faculty Journal Articles

Jazz musicians rely on different skills than do classical musicians for successful performances. We investigated the working memory span of classical and jazz student musicians on musical and nonmusical working memory tasks. College-aged musicians completed the Bucknell Auditory Imagery Scale, followed by verbal working memory tests and musical working memory tests that included visual and auditory presentation modes and written or played recall. Participants were asked to recall the last word (or pitch) from each task after a distraction task, by writing, speaking, or playing the pitch on the piano. Jazz musicians recalled more pitches that were presented in auditory …


Interpretation Bias Toward Ambiguous Information In Burnout And Depression, Renzo Bianchi, Eric Laurent, Irvin Sam Schonfeld, Jay Verkuilen, Chantal Berna Jan 2018

Interpretation Bias Toward Ambiguous Information In Burnout And Depression, Renzo Bianchi, Eric Laurent, Irvin Sam Schonfeld, Jay Verkuilen, Chantal Berna

Publications and Research

Burnout has been defined as a job-related syndrome combining pervasive fatigue and loss of motivation. In recent years, evidence has mounted that burnout may reflect a depressive condition. In this study, we expanded on past investigations of burnout-depression overlap by focusing on interpretation biases toward ambiguous information among the two entities. We conducted a web-based study involving 1056 participants (83% female; mean age: 42.87). Burnout symptoms were assessed with the Shirom-Melamed Burnout Measure and depressive symptoms with the PHQ-9. The Ambiguous Scenarios Test (AST), a measure of interpretation bias validated among dysphoric individuals, was the outcome of interest. The AST …


Effects Of Long-Term Participation In Tennis On Cognitive Function In Elderly Individuals, Scott Culpin Jan 2018

Effects Of Long-Term Participation In Tennis On Cognitive Function In Elderly Individuals, Scott Culpin

Theses: Doctorates and Masters

Many studies have reported the relationship between exercise and cognition with conflicting results. This may be due to differences in intervention durations, session lengths, intensities, and type of exercise. It has been suggested that exercises requiring greater cognitive demand such as football, basketball and racquet sports, are protective against cognitive decline, compared to less cognitively demanding exercises such as swimming, cycling and running, however, research concerning exercise types are currently limited. The present study tested the hypothesis that elderly individuals who had been regularly playing tennis more than 10 years, would have greater cognitive function than those who had been …


Syntax And Semantics Of Perceptual Representation, James K. Quilty-Dunn Sep 2017

Syntax And Semantics Of Perceptual Representation, James K. Quilty-Dunn

Dissertations, Theses, and Capstone Projects

This dissertation is a defense of perceptual pluralism, the thesis that perceptual systems deliver multiple types of representations including those used in thought. In particular, it argues that perceptual systems output iconic (i.e., image-like, analog) representations as well as discursive (i.e., language-like, digital) states. A central thesis is that perceptual representations of objects are propositional and composed of concepts. It also develops a compositional syntax of iconic representation called the coordination model, according to which icons are sets of primitive parts, each of which determines values along multiple analog feature dimensions simultaneously. The dissertation supports the conclusion that perceptual …