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Articles 391 - 420 of 1409

Full-Text Articles in Psychology

Acceptance And Commitment Therapy For A Case Of Scrupulosity-Related Obsessive-Compulsive Disorder, Eric B. Lee, Clarissa W. Ong, Woolee An, Michael P. Twohig Jan 2018

Acceptance And Commitment Therapy For A Case Of Scrupulosity-Related Obsessive-Compulsive Disorder, Eric B. Lee, Clarissa W. Ong, Woolee An, Michael P. Twohig

Psychology Faculty Publications

Acceptance and Commitment Therapy (ACT) is a modern form of Cognitive Behavior Therapy (CBT) with growing support for treating obsessive-compulsive disorder (OCD). We present a case wherein a client presented with scrupulosity-related OCD. We briefly review scrupulosity, explain the theory behind ACT, and present a case, the treatment process, and desired outcomes. Exposure and response prevention (ERP) is described from an ACT perspective and discussed as an option for people with OCD who may be reluctant to engage in more traditional forms of ERP.


Performance Feedback To Increase Use Of Counseling Skills, Jalin K. Finai, Karen F. Muñoz, Clarissa W. Ong, Grayson M. Butcher, Lauri Nelson, Michael P. Twohig Jan 2018

Performance Feedback To Increase Use Of Counseling Skills, Jalin K. Finai, Karen F. Muñoz, Clarissa W. Ong, Grayson M. Butcher, Lauri Nelson, Michael P. Twohig

Psychology Faculty Publications

Counseling is a critical component of audiological care and when implemented purposefully can yield multiple benefits for patients. Professional guidelines indicate that counseling is within the scope of practice for audiologists, yet research has shown that audiologists feel unprepared and are not comfortable providing adjustment counseling. This may be due to inadequate counseling training in audiology graduate programs. To identify ways to address this counseling training gap, this study examined the use of performance feedback to increase counseling skills among audiology graduate students. In this study, participants (n = 5) were recorded during clinical session encounters, and recordings were …


The Role Of Experiential Avoidance In Problematic Pornography Viewing, Michael E. Levin, Eric B. Lee, Michael P. Twohig Jan 2018

The Role Of Experiential Avoidance In Problematic Pornography Viewing, Michael E. Levin, Eric B. Lee, Michael P. Twohig

Psychology Faculty Publications

Research suggests that online pornography use can have harmful consequences for some individuals, but the psychological processes that contribute to problematic viewing are unclear. This study sought to evaluate the role of experiential avoidance in the negative consequences of online pornography viewing in a small cross sectional survey sample of 91 male college students who reported viewing. Results indicated that viewing pornography for experientially avoidant motivations was related to more frequent viewing and predicted self-reported negative consequences of viewing over and above other motivations (e.g., sexual pleasure, curiosity, excitement seeking). Although more frequent viewing was related to more self-reported negative …


Tailoring Acceptance And Commitment Therapy Skill Coaching In-The-Moment Through Smartphones: Results From A Randomized Controlled Trial, Michael E. Levin, Jack Haegar, Rick A. Cruz Jan 2018

Tailoring Acceptance And Commitment Therapy Skill Coaching In-The-Moment Through Smartphones: Results From A Randomized Controlled Trial, Michael E. Levin, Jack Haegar, Rick A. Cruz

Psychology Faculty Publications

There is growing evidence for the efficacy of acceptance and commitment therapy (ACT) interventions delivered through smartphones, but research has not yet focused on how to optimize such interventions. One benefit of mobile interventions is the ability to adapt content based on in-the-moment variables. The current randomized controlled trial evaluated whether an ACT app that tailored skill coaching based on in-the-moment ecological momentary assessments (EMAs) would be more efficacious than the same app where skill coaching was random or an EMA-only condition. A sample of 69 adults interested in using a self-help app were randomized to one of three app …


Scaling Out Evidence-Based Interventions Outside The U.S. Mainland: Social Justice Or Trojan Horse?, Melanie M. Domenech-Rodriguez, Ana A. L. Baumann, Alejandro L. Vázquez, Nancy G. Amador-Buenabad, Natalie Franceschi Rivera, Nydia Ortiz-Pons, J. Rubén Parra-Cardona Jan 2018

Scaling Out Evidence-Based Interventions Outside The U.S. Mainland: Social Justice Or Trojan Horse?, Melanie M. Domenech-Rodriguez, Ana A. L. Baumann, Alejandro L. Vázquez, Nancy G. Amador-Buenabad, Natalie Franceschi Rivera, Nydia Ortiz-Pons, J. Rubén Parra-Cardona

Psychology Faculty Publications

Global health disparities continue to widen as professional standards for effectiveness of mental health services provision become more precise and difficult to achieve across varied economic and social contexts. Within the U.S., health disparities are evident in Latinx populations. Globally, the health disparities are also evident in Latin America as compared to the U.S. and other economically affluent nations. The diversification of psychology in content and persons has led to a unique opportunity to build bridges that can help reduce disparities in- and outside of the U.S. mainland. Collaborations can be of great use in addressing health disparities internationally but …


How Internalized Sexism Impacts Young Adult Women And Their Sociopolitical Behavior, Audrianna Dehlin Jan 2018

How Internalized Sexism Impacts Young Adult Women And Their Sociopolitical Behavior, Audrianna Dehlin

Research on Capitol Hill

Sexism: A belief, practice, or system that supports the idea that the male sex is intrinsically superior to the female sex.

  • The two major types of sexism are hostile and benevolent.
  • In addition to external experiences of sexism, these beliefs can be internalized by women and are linked to negative outcomes.
  • The overall climate surrounding women's issues is becoming more contentious.
  • Because of this, research and conversation surrounding gender equality are in the mainstream consciousness.
  • This study used a correlational design to examine the relationship between internalized sexism, psychological health, relationship satisfaction, political affiliation, voting patterns, religious fundamentalism, social desirability, …


The Impact Of Chronic Stress, Traumatic Experiences And Genes On Behavior, Colten Brown Jan 2018

The Impact Of Chronic Stress, Traumatic Experiences And Genes On Behavior, Colten Brown

Research on Capitol Hill

Chronic unpredictable stress (CUS) alters neurotransmission and remodels neural circuits involved in learning, attention and decision making.

Glial-derived neurotrophic factor (GDNF) is essential for the function of neurons. Regulation of GDNF during stress is linked to resiliency while the inability to regulate it causes behavioral alterations.

We investigated the effects of CUS on latent inhibition (LI), a measure of selective attention expressed in this model as freezing behavior.


The Effects Of Nicotine On Maladaptive Alcohol Drinking, Isabella Stuart Jan 2018

The Effects Of Nicotine On Maladaptive Alcohol Drinking, Isabella Stuart

Research on Capitol Hill

  • Impulsivity is defined as choosing a smaller-sooner choice over a more rational larger-later choice.
  • Most delay discounting studies only investigate magnitude differences in the same reward.
  • Cross-commodity discounting consists of providing the opportunity for subjects to choose between a low quality reward that is available almost immediately and a higher quality reward that is available at a time delay. We will model this in an animal model with rats who have a choice between a relatively small amount of alcohol immediately and a relatively large amount of food at a delay.


The Role Of Multiple Internal Timekeepers And Sources Of Feedback On Interval Timing, Breanna E. Studenka, Daisha L. Cummins, Megan A. Pope Jan 2018

The Role Of Multiple Internal Timekeepers And Sources Of Feedback On Interval Timing, Breanna E. Studenka, Daisha L. Cummins, Megan A. Pope

Kinesiology and Health Science Faculty Publications

The aim of this experiment was to document the role of multiple internal clock mechanisms and external sources of temporal feedback on reducing timing variability when two fingers tap instead of one (a phenomenon known as the bimanual advantage). Previous research documents a reduction in timed interval variability when two effectors time instead of one. In addition, interval variability decreases with multiple sources of feedback. To date, however, no research has explored the separate roles of feedback and internal timing on the bimanual advantage. We evaluated the bimanual advantage in a task that does not utilise an internal clock (circle …


Advancing Civility In Middle Schools, Melanie Domenech Rodriguez, Lesther A. Papa, Alexander Reveles, Samantha M. Corralejo Dec 2017

Advancing Civility In Middle Schools, Melanie Domenech Rodriguez, Lesther A. Papa, Alexander Reveles, Samantha M. Corralejo

Psychology Student Research

No abstract provided.


Advancing Civility In Elementary Schools, Melanie Domenech Rodriguez, Lesther A. Papa, Alexander Reveles, Samantha M. Corralejo Dec 2017

Advancing Civility In Elementary Schools, Melanie Domenech Rodriguez, Lesther A. Papa, Alexander Reveles, Samantha M. Corralejo

Psychology Student Research

No abstract provided.


Exploring The Effect Of Disability Microaggressions On Sense Of Belonging And Participation In College Classrooms, Lynsie Harris Dec 2017

Exploring The Effect Of Disability Microaggressions On Sense Of Belonging And Participation In College Classrooms, Lynsie Harris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Microaggressions are a form of interpersonal discrimination towards marginalized groups that are often ambiguous in nature and delivered unintentionally. The subtleness of these attacks on identity can make them difficult to recognize and address.

Emerging research reveals that the targets of microaggressions are experiencing negative effects on their wellbeing; however, the bulk of existing literature on this topic only addresses microaggressions perpetrated towards racial minority or LGBT individuals. Little is known about pervasiveness and potential impact of microaggressions directed towards people with disabilities- particularly in academic contexts.

This study pilots a measurement tool, the Microaggressions Towards Students with a Disability …


Acculturation And Language Use In Intimate And Sexual Relationships Among Chinese Bilinguals, Tianyi Xie Dec 2017

Acculturation And Language Use In Intimate And Sexual Relationships Among Chinese Bilinguals, Tianyi Xie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

People of Chinese heritage often face complex challenges because of the conflicting values from China and America, especially on sexuality. Through two thousand years of socialization, Chinese culture grew to endorse conservative sexual values and gender roles. In traditional Chinese culture, women are expected to remain chaste and play submissive roles in marriage. Sexuality is treated as a taboo topic that should not be discussed directly. Asian American youth who endorse less traditional Chinese values experience lower sexual satisfaction, lower confidence in their own abilities, and higher adherence to traditional gender roles. Language has also been found to potentially influence …


A Randomized Controlled Trial Of Multiple Versions Of An Acceptance And Commitment Therapy Matrix App For Well-Being, Jennifer Krafft, Sarah Potts, Benjamin Schoendorff, Michael E. Levin Nov 2017

A Randomized Controlled Trial Of Multiple Versions Of An Acceptance And Commitment Therapy Matrix App For Well-Being, Jennifer Krafft, Sarah Potts, Benjamin Schoendorff, Michael E. Levin

Psychology Faculty Publications

Mobile apps may be useful in teaching psychological skills in a high-frequency, low-intensity intervention. The Acceptance and Commitment Therapy (ACT) matrix is a visual tool to help develop psychological flexibility by categorizing moment-to-moment experience and is well suited to a mobile app. This pilot study tested the effects of a simple and complex version of a novel app using the ACT matrix in two distinct samples: help-seeking individuals (n = 35) and students receiving SONA credit (n = 63). Findings indicated no differences between app conditions and a waitlist condition in the SONA credit sample. However, in the …


Mindfulness And Acceptance-Based Trainings For Fostering Self-Care And Reducing Stress In Mental Health Professionals: A Systematic Review, Myriam Rudaz, Michael P. Twohig, Clarissa W. Ong, Michael E. Levin Oct 2017

Mindfulness And Acceptance-Based Trainings For Fostering Self-Care And Reducing Stress In Mental Health Professionals: A Systematic Review, Myriam Rudaz, Michael P. Twohig, Clarissa W. Ong, Michael E. Levin

Psychology Faculty Publications

This review summarizes the effectiveness of Mindfulness-Based Stress Reduction (MBSR), Mindfulness-Based Cognitive Therapy (MBCT), Mindful Self-Compassion (MSC), and Acceptance and Commitment Therapy (ACT) to foster self-care and reduce stress in mental health professionals. Twenty-four quantitative articles from PsycInfo and PubMed were identified that focused on mindfulness, self-compassion, psychological flexibility, stress, burnout, or psychological well-being. All MBSR and MBCT studies lacked active control conditions, but some of the ACT studies and one MSC study included an active control. Most studies support evidence that all training programs tend to improve mindfulness and some also self-compassion. In addition, psychological flexibility was measured in …


Self-Stigma And Weight Loss: The Impact Of Fear Of Being Stigmatized, Jason Lillis, J. G. Thomas, Michael E. Levin, R. R. Wing Oct 2017

Self-Stigma And Weight Loss: The Impact Of Fear Of Being Stigmatized, Jason Lillis, J. G. Thomas, Michael E. Levin, R. R. Wing

Psychology Faculty Publications

The current study sought to examine whether two facets of weight self-stigma (fear of enacted stigma and self-devaluation) were associated with weight change and treatment engagement for 188 individuals participating in a 3-month online weight loss program. Fear of enacted stigma predicted less weight loss 3-months later after controlling for demographics, eating problems, and psychological symptoms. Self-devaluation did not predict weight loss. Neither weight self-stigma variable predicted engagement in the online program. These results add to the literature indicating the negative effects of weight self-stigma while highlighting the central role of fear of being stigmatized by others in this process.


Delay Discounting As An Index Of Sustainable Behavior: Devaluation Of Future Air Quality And Implications For Public Health, Meredith S. Berry, Norma P. Nickerson, Amy L. Odum Sep 2017

Delay Discounting As An Index Of Sustainable Behavior: Devaluation Of Future Air Quality And Implications For Public Health, Meredith S. Berry, Norma P. Nickerson, Amy L. Odum

Psychology Faculty Publications

Poor air quality and resulting annual deaths represent significant public health concerns. Recently, rapid delay discounting (the devaluation of future outcomes) of air quality has been considered a potential barrier for engaging in long term, sustainable behaviors that might help to reduce emissions (e.g., reducing private car use, societal support for clean air initiatives). Delay discounting has been shown to be predictive of real world behavior outside of laboratory settings, and therefore may offer an important framework beyond traditional variables thought to measure sustainable behavior such as importance of an environmental issue, or environmental attitudes/values, although more research is needed …


The Effect Of Atomoxetine On Directed And Random Exploration In Humans, Christopher M. Warren, R. C. Wilson, N. J. Van Der Wee, E. J. Giltay, M. S. Van Noorden, J. A. Bosch, J. D. Cohen, S. Nieuwenhuis Aug 2017

The Effect Of Atomoxetine On Directed And Random Exploration In Humans, Christopher M. Warren, R. C. Wilson, N. J. Van Der Wee, E. J. Giltay, M. S. Van Noorden, J. A. Bosch, J. D. Cohen, S. Nieuwenhuis

Psychology Faculty Publications

The adaptive regulation of the trade-off between pursuing a known reward (exploitation) and sampling lesser-known options in search of something better (exploration) is critical for optimal performance. Theory and recent empirical work suggest that humans use at least two strategies for solving this dilemma: a directed strategy in which choices are explicitly biased toward information seeking, and a random strategy in which decision noise leads to exploration by chance. Here we examined the hypothesis that random exploration is governed by the neuromodulatory locus coeruleus-norepinephrine system. We administered atomoxetine, a norepinephrine transporter blocker that increases extracellular levels of norepinephrine throughout the …


The Interaction Of Mindful Awareness And Acceptance In Couples Satisfaction, Jennifer Krafft, Jack Haegar, Michael E. Levin Jul 2017

The Interaction Of Mindful Awareness And Acceptance In Couples Satisfaction, Jennifer Krafft, Jack Haegar, Michael E. Levin

Psychology Faculty Publications

Past studies indicate that the awareness and acceptance facets of trait mindfulness both independently predict relationship satisfaction. However, this study hypothesized that the combination of awareness and acceptance might be a stronger contributor to relationship functioning than either in isolation. Regression analyses were used to test whether mindful awareness and acceptance interact in predicting couples satisfaction in a sample of dating or married college students (n = 138). Acceptance was positively associated with couples satisfaction, while awareness was unrelated. These two mindfulness facets interacted such that greater awareness was related to poorer satisfaction when acceptance was low, but was …


Evaluating An Adjunctive Mobile App To Enhance Psychological Flexibility In Acceptance And Commitment Therapy, Michael E. Levin, Jack Haegar, Benjamin G. Pierce, Rick A. Cruz Jul 2017

Evaluating An Adjunctive Mobile App To Enhance Psychological Flexibility In Acceptance And Commitment Therapy, Michael E. Levin, Jack Haegar, Benjamin G. Pierce, Rick A. Cruz

Psychology Faculty Publications

The primary aims of this study were to evaluate the feasibility and potential efficacy of a novel adjunctive mobile app designed to enhance the acquisition, strengthening, and generalization of acceptance and commitment therapy (ACT) skills being taught in therapy. A sample of 14 depressed/anxious clients receiving ACT used the ACT Daily app for two weeks in a pre-post, open trial design. Participants reported a high degree of program satisfaction. Clients significantly improved over the two-week period on depression and anxiety symptoms as well as a range of psychological inflexibility measures. Analyses of mobile app data indicated effects of …


Representational Precision In Visual Cortex Reveals Outcome Encoding And Reward Modulation During Action Preparation, Henk Van Steenbergen, Christopher M. Warren, Simone KüHn, Sanne De Wit, Reinout W. Wiers, Bernhard Hommel Jun 2017

Representational Precision In Visual Cortex Reveals Outcome Encoding And Reward Modulation During Action Preparation, Henk Van Steenbergen, Christopher M. Warren, Simone KüHn, Sanne De Wit, Reinout W. Wiers, Bernhard Hommel

Psychology Faculty Publications

According to ideomotor theory, goal-directed action involves the active perceptual anticipation of actions and their associated effects. We used multivariate analysis of fMRI data to test if preparation of an action promotes precision in the perceptual representation of the action. In addition, we tested how reward magnitude modulates this effect. Finally, we examined how expectation and uncertainty impact neural precision in the motor cortex. In line with our predictions, preparation of a hand or face action increased the precision of neural activation patterns in the extrastriate body area (EBA) and fusiform face area (FFA), respectively. The size of this effect …


Effectiveness Of Acceptance And Commitment Therapy As A Treatment For Posttraumatic Stress Disorder And Moral Injury, Ellen J. Bluett May 2017

Effectiveness Of Acceptance And Commitment Therapy As A Treatment For Posttraumatic Stress Disorder And Moral Injury, Ellen J. Bluett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Posttraumatic stress disorder (PTSD) is a common condition among military personal and veterans. Despite strong empirical support for first line treatments for PTSD, many veterans do not complete or respond to treatment. Research suggests that experiential avoidance is a contributing factor to both treatment dropout and minimal treatment gains. Acceptance and commitment therapy (ACT) is an empirically supported cognitive behavioral intervention that aims to decrease experiential avoidance while increasing psychological flexibility. Research has shown ACT to be a promising intervention for the treatment of PTSD; however, its effectiveness in veterans with PTSD is limited.

In conjunction with Utah State University …


Examining Effects Of Technology Level And Reinforcer Arrangements On Preference And Efficacy, Audrey N. Hoffman May 2017

Examining Effects Of Technology Level And Reinforcer Arrangements On Preference And Efficacy, Audrey N. Hoffman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Applied behavior analysts use reinforcement to enact socially meaningful outcomes with the individuals that they work with. Identifying the ways in which reinforcers function optimally is an important consideration for behavioral research. Preference for reinforcers, and how effective reinforcers are, may change depending upon several factors. Two important factors to consider are how reinforcers are arranged and the technology level of the reinforcers used. Reinforcers can be delivered following every response in a distributed manner or they can be delivered following several responses in an accumulated manner. Additionally, leisure items used as reinforcers can be classified according to technology level, …


Board Review Course As Intervention: Impact On Pance Performance, Alan K. Mirly, Melanie M. Domenech-Rodriguez, Jennifer M. Coombs May 2017

Board Review Course As Intervention: Impact On Pance Performance, Alan K. Mirly, Melanie M. Domenech-Rodriguez, Jennifer M. Coombs

Psychology Faculty Publications

Purpose To analyze the effectiveness of an independent commercial 3-day Physician Assistant National Certifying Examination (PANCE)–Physician Assistant National Recertifying Examination (PANRE) board review course to improve first-time pass rates on the PANCE. Methods Data were extracted from academic files at 2 universities over 2 years. In the first year (2014), the universities had not implemented a requirement for participation in a commercial board review course. In the second year (2015), both universities required participation in the course. There were 116 students at Idaho State University and 85 students at the University of Utah. Results Multiple regression analyses with PANCE score …


A Look Into Lookism: An Evaluation Of Discrimination Based On Physical Attractiveness, Cherea Hammer May 2017

A Look Into Lookism: An Evaluation Of Discrimination Based On Physical Attractiveness, Cherea Hammer

Undergraduate Honors Capstone Projects

Discrimination in employment on the basis of race, sex, national origin, religion, and other federally protected categories is well recognized as a social problem and anti-discrimination legislation works to limit the impact of discrimination on marginalized populations. However, most people do not consider discrimination based on physical appearance. “Lookism” captures the idea that an individual can be discriminated against based on their physical appearance or physical attractiveness and can also be called physical attractiveness discrimination. In recent years, the prevalence of the issue of physical attractiveness discrimination has been brought to the attention of professionals dealing with employment and has …


The Relationship Between Competitive State Anxiety And Imagery Ability In High School Track And Field Athletics, Bryson Thomas Grondel May 2017

The Relationship Between Competitive State Anxiety And Imagery Ability In High School Track And Field Athletics, Bryson Thomas Grondel

Undergraduate Honors Capstone Projects

The purpose of this study was to investigate the relationship between imagery ability, subcomponents of competitive state anxiety, and performance outcomes in high school track and field athletes during the competitive season. Following IRB approval and parental consent, sixteen participants were recruited to participate in a four-week study using two thoroughly validated assessment tools: The Sport's Imagery Questionnaire (SIQ) and The Competitive State Anxiety Inventory #2 (CSAI-2). This study explored imagery ability by qualifying several aspects of imagery ability. Instead of focusing exclusively on frequency, (a commonly cited limitation to the applicability of the SIQ) the SIQ was modified to …


Delay Discounting Mechanisms In Eating Disorders: A Call To Arms, Rowan Crowder May 2017

Delay Discounting Mechanisms In Eating Disorders: A Call To Arms, Rowan Crowder

Undergraduate Honors Capstone Projects

Delay discounting, or temporal discounting, is a measure of impulsivity that describes the devaluation of a reinforcer as a function of its receipt in time. Several studies have shown that individuals diagnosed with a variety of behavioral maladies such as obesity/over-eating, substance abuse, cigarette smoking, heavy drinking, and problematic gambling exhibit greater discounting rates. To be specific, they are more impulsive and less willing to wait for delayed reinforcement than healthy controls. Several of these studies have found that obese women discount at a steeper rate than non-obese women, similar results have been shown in binge eating disorder. The relationship …


Training Parents In Descriptive Assessment And Function Identification, Makenzie Sip May 2017

Training Parents In Descriptive Assessment And Function Identification, Makenzie Sip

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It is often difficult for parents to address their child’s problem behavior. Children with special needs can display more frequent and intense problem behavior. Therefore, professionals need to help parents of children with special needs identify how to decrease their child’s problem behavior. Professionals help to decrease problem behavior by performing assessments called descriptive assessments to identify why the problem behavior is happening, and then using these assessments to create an appropriate plan of how to prevent and respond to the problem behavior. We examined if parents could be taught the skills necessary to perform descriptive assessments and then use …


Increasing Knowledge And Detection Of Racial And Ethnic Microaggressions In White College Students, Christina A. Patterson May 2017

Increasing Knowledge And Detection Of Racial And Ethnic Microaggressions In White College Students, Christina A. Patterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Scholars have strongly suggested that to combat microaggressions and their impact on persons of color, there needs to be an increased awareness and ability to detect microaggressions when they occur. There is limited research on how to practically address these concerns. This study examined the efficacy of a multimedia intervention aimed at increasing White individuals’ ability to accurately detect microaggressions. The high-exposure intervention was compared against two other conditions, low-exposure and control, at pre-, post-, and 1-week follow-up from intervention.

Undergraduate university students were recruited from two predominantly white universities (PWU). Participants watched a series of videos to determine if …


Extension Of Behavioral Momentum Theory To Conditions With Changing Reinforcer Rates, Andrew R. Craig May 2017

Extension Of Behavioral Momentum Theory To Conditions With Changing Reinforcer Rates, Andrew R. Craig

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Behavior is more likely to persist when disrupted in some way in the presence of stimuli correlated with frequent delivery of reward than in the presence of stimuli correlated with infrequent rewards. In laboratory investigations, the correlation between reward rates and specific stimuli are almost always held constant before testing for persistence. In the real world, however, how often rewards are encountered is likely to vary substantially over time. The major goal of the work described in this dissertation was to explore effects of reward rates that change over time on persistence of behavior in controlled laboratory settings using pigeon …