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Dynamics Of Alpha Control: Preparatory Suppression Of Posterior Alpha Oscillations By Frontal Modulators Revealed With Combined Eeg And Event-Related Optical Signal, Kyle E. Mathewson, Diane M. Beck, Tony Ro, Edward L. Maclin, Kathy A. Low, Monica Fabiani, Gabriele Gratton Oct 2014

Dynamics Of Alpha Control: Preparatory Suppression Of Posterior Alpha Oscillations By Frontal Modulators Revealed With Combined Eeg And Event-Related Optical Signal, Kyle E. Mathewson, Diane M. Beck, Tony Ro, Edward L. Maclin, Kathy A. Low, Monica Fabiani, Gabriele Gratton

Publications and Research

We investigated the dynamics of brain processes facilitating conscious experience of external stimuli. Previously, we proposed that alpha (8–12 Hz) oscillations, which fluctuate with both sustained and directed attention, represent a pulsed inhibition of ongoing sensory brain activity. Here we tested the prediction that inhibitory alpha oscillations in visual cortex are modulated by top–down signals from frontoparietal attention networks. We measured modulations in phase-coherent alpha oscillations from superficial frontal, parietal, and occipital cortices using the event-related optical signal (EROS), a measure of neuronal activity affording high spatiotemporal resolution, along with concurrently recorded EEG, while participants performed a visual target detection …


Striving For Integration: Referential Activity And Object Relational Level In A Sample Of Bisexual Women, Lauren Demille Oct 2014

Striving For Integration: Referential Activity And Object Relational Level In A Sample Of Bisexual Women, Lauren Demille

Dissertations, Theses, and Capstone Projects

Sexuality has been theorized as a particular human experience that is driven, unmirrored in development, and enigmatic, not reaching what Fonagy describes as "second order representation." Yet, as a social being, one is expected to declare and publically live out a sexual identity. This study is situated within this point of contact between the visceral and the sociolinguistic, with particular attention paid to the experiences of bisexual women, whose potential challenges in articulating a sexual identity are considered. The study sample was comprised of forty bisexual women participating in the Dually Attracted Women's Narratives study (Levy-Warren, 2013) returning for the …


The Culture Of Generativity: Exploring The Manifestation Of Generativity In The Manifestation Of Generativity In The Mexican/Mexican-American Population, Mara J. Bach Oct 2014

The Culture Of Generativity: Exploring The Manifestation Of Generativity In The Manifestation Of Generativity In The Mexican/Mexican-American Population, Mara J. Bach

Dissertations (1934 -)

Generativity is a developmental stage in adulthood where an individual makes a conscious decision to leave their mark on the world with the intent to make the world a better place for future generations. Research has shown that engaging in generativite acts benefits both the person engaging in such practices as well as the recipient, and thus generativity is positively correlated with reported wellbeing. It has also been shown that adults engaging in such practices are psychologically healthier and ease into old age with less resistance than their non-generative counterparts. Generativity is a strengths-based approach. It is shaped by one's …


Differential Effects Of Intermittent Versus Continuous Haloperidol Treatment Throughout Adolescence On Haloperidol Sensitization And Social Behavior In Adulthood, Jun Gao, Ming Li Oct 2014

Differential Effects Of Intermittent Versus Continuous Haloperidol Treatment Throughout Adolescence On Haloperidol Sensitization And Social Behavior In Adulthood, Jun Gao, Ming Li

Department of Psychology: Faculty Publications

Animal work on the behavioral effects of antipsychotic treatment suggests that different dosing regimens could affect drug sensitivity differently, with an intermittent treatment regimen tending to cause a sensitization effect, while a continuous treatment causing a tolerance. In this study, we explored how haloperidol (HAL) sensitization induced throughout adolescence and tested in adulthood was differentially impacted by these two dosing regimens in the conditioned avoidance response (CAR) test.We also examined howthese two dosing regiments affected social interaction and social memory in adulthood. Male adolescent Sprague-Dawley rats were treated with HAL via either osmotic minipump(HAL-0.25 CONT; 0.25mgkg−1 day−1, …


Age-Related Aspects Of Mirror-Use By Bottlenose Dolphins (Tursiops Truncatus), Rachel A. Morrison Oct 2014

Age-Related Aspects Of Mirror-Use By Bottlenose Dolphins (Tursiops Truncatus), Rachel A. Morrison

Dissertations, Theses, and Capstone Projects

Bottlenose dolphins are neuroanatomically different and evolutionarily divergent from primates yet they exhibit mirror self-recognition (MSR), a rare cognitive ability in non-human animals. This research investigated the developmental and age-related aspects of MSR in this species. During a longitudinal study, a social group of bottlenose dolphins at the National Aquarium, Baltimore, MD were exposed to a mirror and their behavioral responses were recorded to: 1) further confirm the presence of MSR in this species, 2) determine the age of emergence of MSR and 3) draw comparisons with data documenting the emergence of this ability in humans and great ape species. …


Work-Life Experiences For People With Mobility Disabilities In New York City, Jessica A. Murray Oct 2014

Work-Life Experiences For People With Mobility Disabilities In New York City, Jessica A. Murray

Dissertations, Theses, and Capstone Projects

Work-family (or work-life) studies aim to measure interactions between the realms of work and home. It is necessary to examine these interactions within a broad context to understand external sources of tension on the work-life dynamic, including environmental, economic, and political factors. Exploratory interviews were conducted with participants of working age with a mobility disability, and when applicable, their significant others. Questions focused on work, home and transportation environments. Using Bronfenbrenner's ecological systems theory, a model of contextual issues was constructed as the basis for an in-depth analysis of work-life issues for people with a mobility disability. Contextual research and …


Risk Assessment Of Sexually Abusive Clergy: Utility Of Sex Offender Risk Instruments With A Unique Offender Subgroup, Anthony Perillo Oct 2014

Risk Assessment Of Sexually Abusive Clergy: Utility Of Sex Offender Risk Instruments With A Unique Offender Subgroup, Anthony Perillo

Dissertations, Theses, and Capstone Projects

Sex offender risk instruments provide empirically based outlooks on recidivism risk and often serve as a critical part of sex offender management. If applied to unrepresented offender groups, these instruments may offer inaccurate pictures of risk and hinder efforts to reduce sexual violence. With little research available on sexually abusive clergy prior to the abuse scandal of the early 2000s, sexually abusive clergy are one group not represented in the research used to develop risk measures. An understanding of the validity of current risk assessment practices with sexually abusive clergy is critical and timely, as changes to the handling of …


The Influence Of An Appetitive Conditioned Stimulus On Interval Timing Behavior, Joseph Daniel Jacobs Oct 2014

The Influence Of An Appetitive Conditioned Stimulus On Interval Timing Behavior, Joseph Daniel Jacobs

Dissertations, Theses, and Capstone Projects

Pavlovian incentive motivation provides a theoretical framework on the basis of which experiments can be designed to examine the effects of motivational variables on timing behavior. The Pavlovian-Instrumental transfer (PIT) paradigm is a prototype for studying Pavlovian incentive motivation. The current study examined the effect of a Pavlovian appetitive conditioned stimulus (CS) on timing performance, based on the PIT paradigm. Nine pigeons were exposed to pairings of a 120-s conditioned stimulus (flashing or steady houselight) and unconditioned stimulus (food). The pigeons were then trained on the peak procedure (FI 30 s). In a subsequent testing phase, the effect of the …


A Derivation Of The Tonal Hierarchy From Basic Perceptual Processes, David Smey Oct 2014

A Derivation Of The Tonal Hierarchy From Basic Perceptual Processes, David Smey

Dissertations, Theses, and Capstone Projects

In recent decades music psychologists have explained the functioning of tonal music in terms of the tonal hierarchy, a stable schema of relative structural importance that helps us interpret the events in a passage of tonal music. This idea has been most influentially disseminated by Carol Krumhansl in her 1990 monograph Cognitive Foundations of Musical Pitch. Krumhansl hypothesized that this sense of the importance or centrality of certain tones of a key is learned through exposure to tonal music, in particular by learning the relative frequency of appearance of the various pitch classes in tonal passages. The correlation of pitch-class …


Executive Dysfunction And Reward Dysregulation: Interactions In Drug Addiction, Kristen Paula Morie Oct 2014

Executive Dysfunction And Reward Dysregulation: Interactions In Drug Addiction, Kristen Paula Morie

Dissertations, Theses, and Capstone Projects

Cocaine addiction is a serious public health hazard, and contributes to disastrous outcomes for individuals who suffer from it. Addiction is accompanied by an inability to control one's own behavior, and a preoccupation with cocaine at the expense of other rewarding pursuits. Previous research has suggested that difficulties with executive function and reward processing may underlie these problems, but the extent to which each contributes to addiction severity, or how these two factors may interact, remains to be elucidated. By using event related potential (ERP) measures in combination with information about self-reported anhedonia over three experiments, we set out to …


Facial Affect Recognition And Social Functioning In Individuals At Risk For Schizophrenia Spectrum Disorders, Marta Ewa Statucka Oct 2014

Facial Affect Recognition And Social Functioning In Individuals At Risk For Schizophrenia Spectrum Disorders, Marta Ewa Statucka

Dissertations, Theses, and Capstone Projects

Facial affect recognition (FAR) is impaired in schizophrenia patients and to a lesser extent in individuals at familial/genetic, clinical, and psychometric risk for psychosis. Reduced FAR reaction time and negative bias are present in patients; however, their role is less clear in at-risk samples. Impaired social functioning, a hallmark of schizophrenia, is also impaired in at-risk individuals and is associated with FAR impairment. Given FAR deficits in schizophrenia, the current study aimed to elucidate the nature of FAR and social functioning impairments among individuals at high psychometric risk for psychosis and to examine whether FAR acts as a mediator in …


Psychic Collapse And Traumatic Defense: How The Mind Mediates Trauma Living In The Body, Patricia Kim Yoon Oct 2014

Psychic Collapse And Traumatic Defense: How The Mind Mediates Trauma Living In The Body, Patricia Kim Yoon

Dissertations, Theses, and Capstone Projects

The aim of this exploratory study was to link psychoanalytic theories of trauma and its impact on the mind with psychobiological research of how trauma lives in the body. The study has expanded on prior research (Cramer, 2003) to evidence that defense mechanisms do in fact moderate the relationship between stress and physiological response, and that there are likely individual differences in physiological response to traumatic stress. This study goes further to identify the psychological concomitants of these individual differences within an adult population exposed to potentially traumatic events (PTEs), and their proclivity for using different defense mechanisms. Defense use …


Biological Motion Processing In Typical Development And In The Autism Spectrum, Aaron Krakowski Oct 2014

Biological Motion Processing In Typical Development And In The Autism Spectrum, Aaron Krakowski

Dissertations, Theses, and Capstone Projects

Biological motion (BM) analysis and interpretation is a fundamental process of human neurocognition that has been only minimally explored neurophysiologically. In addition to its importance in understanding the underlying roots and development of social cognition, BM processing is a prime candidate domain for exploring the underlying etiology of social cognitive disorders such as the autism spectrum.

In an initial experiment, typical adults observed BM point-light displays of a human actor (UM) as well as their spatially scrambled counterparts (SM), in both an unattended distractor task as well as an explicit attention task. Results showed a neurophysiological response manifested as three …


Another Year Of Great Strides, Melanie M. Domenech-Rodriguez Oct 2014

Another Year Of Great Strides, Melanie M. Domenech-Rodriguez

Psychology Faculty Publications

Four more issues of the Psi Chi Journal of Psychological Research have been printed. I have exciting updates to share and new developments to report, but above all, I want to take a moment to thank the authors for submitting their fine work to our Journal. They provide the content that is critical to the advancement of science. I also want to thank reviewers for their tireless work on behalf of Psi Chi Journal. Their excellent peer reviews provide the feedback necessary for us to meet the Journal’s mission “to foster and reward the scholarly efforts of psychology students as …


Protective Effects Of Social Support And Self-Esteem On Sexual Minority Young Adults' Mental Health, Sara Bock Oct 2014

Protective Effects Of Social Support And Self-Esteem On Sexual Minority Young Adults' Mental Health, Sara Bock

Psychology Theses & Dissertations

Existing research has established that lesbian, gay and bisexual (LGB) youths experience higher rates of mental illness. However, fewer studies have examined what influences these disparate outcomes. Meyer's (2003) minority stress theory suggests that social factors, such as social support, and internal resources, such as self-esteem, are important potential moderators that may buffer the detrimental effects of stigma-related stress for sexual minority individuals. This study examined the potential protective effects peer support, parent support, school support, and self-esteem in adolescence in explaining mental health disparities between sexual minority and heterosexual young adults. Mental health outcomes included alcohol consumption, depressive symptoms, …


The Effects Of Primary And Secondary Assortative Mating For Alcohol Misuse On Relationship Satisfaction Alcohol Use And Alcohol Consequences, Michelle Katherine Holt Crewe Oct 2014

The Effects Of Primary And Secondary Assortative Mating For Alcohol Misuse On Relationship Satisfaction Alcohol Use And Alcohol Consequences, Michelle Katherine Holt Crewe

Psychology Theses & Dissertations

This study examined undergraduate, emerging-adult men and women between the ages of 18 and 30 and their dating partners. The AUDIT (Babor, Higgens-Biddle, Saunders, & Monteiro, 2001) was used to assess their own and their partners' reports of hazardous alcohol misuse. Four types of couples were identified: alcohol misusing participants with alcohol misusing partners (i.e., alcohol concordant couples), alcohol misusing female participants with a non-alcohol misusing partner, alcohol misusing male participants with an non-alcohol misusing partner and non-alcohol misusing women and men (i.e., non misuse concordant couples). Participants and their relationship partners were also assessed for their status as an …


An Exploratory Investigation Of Looping High School Math And English And Student Achievement, Lee Langmuir Sep 2014

An Exploratory Investigation Of Looping High School Math And English And Student Achievement, Lee Langmuir

Theses and Dissertations

The purpose of this exploratory investigation was to compare the standardized test scores of students in looped (n=47) and non-looped (n=38) settings in high school Math and English classes. In doing so, the scores were compared to see if instruction from the same teacher for more than one year had an effect on student achievement as measured by the High School Proficiency Assessment (HSPA). The HSPA is broken down in to a Math and English section with a possible score of 300 on each; student scores fall in to Partially Proficient (PP), Proficient (P), and Advanced Proficient (AP). Other factors …


Identifying Tier-Two At Risk Students In New Jersey Public Schools, Danisha Moodie Sep 2014

Identifying Tier-Two At Risk Students In New Jersey Public Schools, Danisha Moodie

Theses and Dissertations

Actions to improve student's socio-emotional success in public education by attempting to identify, and eliminate bullying behaviors within educational institution are a key focus for many educators. Harassment, intimidation and bullying behaviors (HIB) are recognized as a solemn issue across the nation. According to the Anti-Bullying Bill of Rights Act, public schools are required to report (HIB) incidents to the New Jersey Department of Education. Moreover, coupled with the mandated guidelines of this new legislation many public schools within New Jersey have also adopted positive behavior interventions. This may help in identifying at-risk students who may require a greater level …


Exurban Residents’ Perceptions Of Naturally Returning Predators: Connecticut Case Study, Margaret E. Sackrider, Susan G. Clark, Isaac M. Ortega Sep 2014

Exurban Residents’ Perceptions Of Naturally Returning Predators: Connecticut Case Study, Margaret E. Sackrider, Susan G. Clark, Isaac M. Ortega

Yale Day of Data

As a result of reforestation, growth of exurban areas and wildlife adaptation, it is believed that the public is currently encountering more human-wildlife conflicts than ever before. The key to balancing wildlife conservation and human development is understanding the dynamic relationship between humans and carnivores. Specifically, gaining insight into the complexity of this relationship will aide in the creation of more effective conservation policy and outreach.

Reforestation throughout Connecticut has supported a tremendous population growth of pray species and subsequently the growth of predator populations including coyotes, Canis latrans, and black bears, Ursus americanus. According to some biologists, …


“Me & My Brain”: Exposing NeuroscienceʼS Closet Dualism, Liad Mudrik, Uri Maoz Sep 2014

“Me & My Brain”: Exposing NeuroscienceʼS Closet Dualism, Liad Mudrik, Uri Maoz

Psychology Faculty Articles and Research

Our intuitive concept of the relations between brain and mind is increasingly challenged by the scientific world view. Yet, although few neuroscientists openly endorse Cartesian dualism, careful reading reveals dualistic intuitions in prominent neuroscientific texts. Here, we present the “double-subject fallacy”: treating the brain and the entire person as two independent subjects who can simultaneously occupy divergent psychological states and even have complex interactions with each other—as in “my brain knew before I did.” Although at first, such writing may appear like harmless, or even cute, shorthand, a closer look suggests that it can be seriously misleading. Surprisingly, this confused …


The Psychology Of Competitive Dance: A Study Of The Motivations For Adolescent Involvement, Samantha Sobash Sep 2014

The Psychology Of Competitive Dance: A Study Of The Motivations For Adolescent Involvement, Samantha Sobash

e-Research: A Journal of Undergraduate Work

"Competition is a social process that is so pervasive in Western civilization that no one can escape it" (Robson 2004). Dance training for most people begins at an early age, and thus the art form akin to sports introduces youth to competition. The booming dance competition industry has only enhanced the competitive aspect of the art form. Currently there are upwards of 200 local, regional, and national competitions held annually with participants as young as four years old. Is competition innate or are we introducing it as part of youth development in the Western world? Youth are increasingly pushed by …


Asenapine Sensitization From Adolescence To Adulthood And Its Potential Molecular Basis, Qing Shu, Rongyin Qin, Yingzhu Chen, Gang Hu, Ming Li Sep 2014

Asenapine Sensitization From Adolescence To Adulthood And Its Potential Molecular Basis, Qing Shu, Rongyin Qin, Yingzhu Chen, Gang Hu, Ming Li

Department of Psychology: Faculty Publications

Asenapine is a new antipsychotic drug that induces a long-lasting behavioral sensitization in adult rats. The present study investigated the developmental impacts of adolescent asenapine treatment on drug sensitivity and on 3 proteins implicated in the action of antipsychotic drugs (i.e. Brainderived neurotrophic factor (BDNF), dopamine D2 receptor, and ΔFosB) in adulthood. Male adolescent Sprague-Dawley rats (postnatal days, P 43-48) were first treated with asenapine (0.05, 0.10 or 0.20 mg/kg, sc) and tested in the conditioned avoidance or PCP (2.0 mg/kg, sc)-induced hyperlocomotion tasks for 5 days. After they became adults (∼P 76), asenapine sensitization was assessed in a …


The Impact Of Dance/Movement Classes On Adolescent Behavior In An Urban High School Setting, Dinesha Demesa-Simpson Sep 2014

The Impact Of Dance/Movement Classes On Adolescent Behavior In An Urban High School Setting, Dinesha Demesa-Simpson

Theses and Dissertations

The inclusion of the arts in education has been undervalued and overlooked by many public school districts throughout the country. As a result of cutbacks, dance programs in educational settings have become an afterthought. In this study the relationship between dance/movement classes and disruptive behavior was analyzed in a sample of 45 at risk students in an urban high school setting. The findings supported the hypothesis that a) dance classes can be utilized as an intervention to reduce stress and b) students who participate in dance programs in public school settings will develop self-control, self-regulation and exhibit less disruptive behavior. …


Integrating Cognitive Science With Innovative Teaching In Stem Disciplines, Mark A. Mcdaniel, Regina F. Frey, Susan M. Fitzpatrick, Henry L. Roediger Iii Sep 2014

Integrating Cognitive Science With Innovative Teaching In Stem Disciplines, Mark A. Mcdaniel, Regina F. Frey, Susan M. Fitzpatrick, Henry L. Roediger Iii

Books and Monographs

This volume collects the ideas and insights discussed at a novel conference, the Integrating Cognitive Science with Innovative Teaching in STEM Disciplines Conference, which was held September 27-28, 2012 at Washington University in St. Louis. With funding from the James S. McDonnell Foundation, the conference was hosted by Washington University’s Center for Integrative Research on Cognition, Learning, and Education (CIRCLE), a center established in 2011. Available for download as a PDF. Titles of individual chapters can be found at http://openscholarship.wustl.edu/circle_book/.


Developmental Trajectories Of Physical Aggression And Nonaggressive Rule-Breaking Among At-Risk Males And Females During Late Childhood And Early Adolescence, Eugena Givens Sep 2014

Developmental Trajectories Of Physical Aggression And Nonaggressive Rule-Breaking Among At-Risk Males And Females During Late Childhood And Early Adolescence, Eugena Givens

USF Tampa Graduate Theses and Dissertations

Criminological, psychological, and developmental researchers have relentlessly explored behavioral characteristics and juvenile justice outcomes in an effort to establish the most appropriate means of analyzing childhood and adolescent problem behaviors. Cross-discipline, empirical evidence and factor analytic research has consistently identified the presence of two predictive concepts, physical aggression and nonaggressive rule-breaking. Research pertaining to the risk factors and correlates of these two distinct substructures of offending align with theoretically postulated typologies of delinquency and offending as well as the frequently cited patterns of delinquency and offending within reviews of longitudinal research. Using longitudinal data from a sample of 756 at-risk, …


Depressive-Like Behavioral Response Of Adult Male Rhesus Monkeys During Routine Animal Husbandry Procedure, Michael B. Hennessy, Brenda Mccowan, Jing Jiang, John P. Capitanio Sep 2014

Depressive-Like Behavioral Response Of Adult Male Rhesus Monkeys During Routine Animal Husbandry Procedure, Michael B. Hennessy, Brenda Mccowan, Jing Jiang, John P. Capitanio

Psychology Faculty Publications

Social isolation is a major risk factor for the development of depressive illness; yet, no practical nonhuman primate model is available for studying processes involved in this effect. In a first study, we noted that adult male rhesus monkeys housed individually indoors occasionally exhibited a hunched, depressive-like posture. Therefore, Study 2 investigated the occurrence of a hunched posture by adult males brought from outdoor social groups to indoor individual housing. We also scored two other behaviors—lying on the substrate and day time sleeping—that convey an impression of depression. During the first week of observation following individual housing, 18 of 26 …


Influence Of Seductive Details, Belief-Congruence, And Repeated Testing On Memory For Controversial Information, Daniel Adam Nuccio Sep 2014

Influence Of Seductive Details, Belief-Congruence, And Repeated Testing On Memory For Controversial Information, Daniel Adam Nuccio

Theses and Dissertations

People often encounter conflicting information on a wide array of topics. How they evaluate this information in relation to their current beliefs, and the effects of other influences, such as the weight given to superficial aspects of the information (e.g. pictures, anecdotes, or jargon that are at most minimally related to an author's argument), has been of interest to researchers for many years. One component of their processing

and evaluation of this information is their memory for the information. This study set out to examine the following questions: (1) Is belief-congruent in

formation remembered better or worse than belief incongruent …


Intergeniculate Leaflet Lesions Result In Differential Activation Of Brain Regions Following The Presentation Of Photic Stimuli In Nile Grass Rats, Andrew J. Gall, Lily Yan, Laura Smale, Antonio A. Nunez Sep 2014

Intergeniculate Leaflet Lesions Result In Differential Activation Of Brain Regions Following The Presentation Of Photic Stimuli In Nile Grass Rats, Andrew J. Gall, Lily Yan, Laura Smale, Antonio A. Nunez

Faculty Publications

The intergeniculate leaflet (IGL) plays an important role in the entrainment of circadian rhythms and the mediation of acute behavioral responses to light (i.e., masking). Recently, we reported that IGL lesions in diurnal grass rats result in a reversal in masking responses to light as compared to controls. Here, we used Fos as a marker of neural activation to examine the mechanisms by which the IGL may influence this masking effect of light in grass rats. Specifically, we examined the patterns of Fos activation in retinorecipient areas and in brain regions that receive IGL inputs following 1-h light pulses given …


Anthropomorphism, Anthropectomy, And The Null Hypothesis, Kristin Andrews, Brian Huss Sep 2014

Anthropomorphism, Anthropectomy, And The Null Hypothesis, Kristin Andrews, Brian Huss

Experimentation Collection

We examine the claim that the methodology of psychology leads to a bias in animal cognition research against attributing ‘‘anthropomorphic’’ properties to animals (Sober in Thinking with animals: new perspectives on anthropomorphism. Columbia University Press, New York, pp 85–99, 2005; de Waal in Philos Top 27:225–280, 1999). This charge is examined in light of a debate on the role of folk psychology between primatologists who emphasize similarities between humans and other apes, and those who emphasize differences. Weargue that while in practice there is sometimes bias, either in the formulation of the null hypothesis or in the preference of Type-II …


Laterality Influences Cognitive Performance In Rainbowfish Melanotaenia Duboulayi, Anne-Laurence Bibost, Culum Brown Sep 2014

Laterality Influences Cognitive Performance In Rainbowfish Melanotaenia Duboulayi, Anne-Laurence Bibost, Culum Brown

Sentience Collection

Cerebral lateralization has been suggested to convey a selective advantage to individuals by enhancing their cognitive abilities. Few, however, have explicitly compared the cognitive ability of animals with strongly contrasting laterality. Here, we examined the influence of laterality on learning performance in the crimson spotted rainbowfish, Melanotaenia duboulayi, using a classical conditioning paradigm. We also compared the learning ability of wild caught and captive-reared fish to examine the influence of rearing environment on cognitive performance. Laterality was established by observing which eye fish preferred to use while viewing their mirror image. Subjects were then conditioned to associate the appearance of …