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Oh, What A Tangled Web We Weave: Cyberbullying, Anxiety, Depression, And Loneliness, Kristen Laprade Johnson Jan 2016

Oh, What A Tangled Web We Weave: Cyberbullying, Anxiety, Depression, And Loneliness, Kristen Laprade Johnson

Electronic Theses and Dissertations

Cyberbullying can be defined as any intentionally aggressive act occurring through electronic forms of communication. Drawing on literature examining traditional, face-to-face bullying, it is likely that this relatively contemporary form of victimization is associated with emotional distress. This has yet to be examined with any empirical rigor, however, as there are few studies of the construct. The present research assessed prevalence rates of cyberbullying in youth in North Mississippi using a psychometrically sound measure. These rates were found to be towards the higher end of previous studies (67.6% with exposure to cyberbullying and 6.3% with clinically elevated levels of cyberbullying). …


The Associations Between Values, Committed Action, And Cardiovascular Reactivity, Bianca Marie Crudup Jan 2016

The Associations Between Values, Committed Action, And Cardiovascular Reactivity, Bianca Marie Crudup

Electronic Theses and Dissertations

High stress levels can have profound physical and emotional effects. Several coping mechanisms have been shown to decrease levels of stress. Values, a form of coping, have been implicated in reducing psychological and physiological indicators of stress. The behavioral component, committed action has also demonstrated treatment efficacy in ACT treatments of depression, anxiety, and chronic pain. However, few studies have examined the effects of values and committed action on acute responses (e.g., cardiovascular reactivity) to stress. The purpose of the present study was to examine the association between values, committed action, and physiological responses to stress. Participants were 107 students …


Investigating The Relationship Between Personality Traits And Athletic Performance Among Elite Hockey Players, Brittney H. Conway Jan 2016

Investigating The Relationship Between Personality Traits And Athletic Performance Among Elite Hockey Players, Brittney H. Conway

EWU Masters Thesis Collection

"An interesting trend in the personality literature has been the assessment of the relationship between personality traits and athletic performances. In non-sport settings, the conscientiousness trait has been found to be strongly related to a number of good outcomes including job and training proficiency, academic performances, and physical activity (Barrick & Mout, 1991; Poropat, 2009; Rhodes & Smith, 2006). In the athletic setting, similar findings have been found with soccer players (Piedmont, Hill, & Blanco, 1999), football players (Tran, 2012) and Division 1 collegiate athletes (Saale-Prasad, 2014). However, in professional hockey these findings have generally not been replicated (Karp, 2000; …


Does Parental Financial Assistance Assist Young Adults To Be Financially Healthy? Effects Of Parent-Child Relationship Qualities On Financial Outcomes And Happiness, Ji Hyun Kim, Julia C. Torquati Jan 2016

Does Parental Financial Assistance Assist Young Adults To Be Financially Healthy? Effects Of Parent-Child Relationship Qualities On Financial Outcomes And Happiness, Ji Hyun Kim, Julia C. Torquati

Department of Child, Youth, and Family Studies: Faculty Publications

Many parents provide financial support for young adult children (Padilla-Walker, 2012). This financial support could help or hinder young adults' financial wellbeing. This current study investigates young adults' financial outcomes (e.g., financial responsibility, money management behavior and worry about money) as mediators of the associations between qualities of parent-child relationships (e.g., closeness with father, closeness with mother, spending time with father, and spending time with mother) and young adults' overall happiness. The role of parental financial support was tested as a moderator of all significant pathways.

Data from the Transition into Adulthood data set of the 2011 Panel Study of …


Impacts Of Recreational Aviation On Wildlife: The Physiological Stress Response In White-Tailed Deer (Odocoileus Virginianus) And Associated User Perceptions, Devin W. Landry Jan 2016

Impacts Of Recreational Aviation On Wildlife: The Physiological Stress Response In White-Tailed Deer (Odocoileus Virginianus) And Associated User Perceptions, Devin W. Landry

Graduate Student Theses, Dissertations, & Professional Papers

Recreational aviation on public lands may negatively impact wildlife. However, land-use decisions need to balance user need with wildlife impact. We know very little about 1) how back country airstrip use affects local wildlife, or 2) attitudes and perceptions of recreational pilots toward possible management actions. For my Master’s research, I investigated how aircraft activity influenced physiological measures of stress in white-tailed deer, while also modeling how psychometrics such as wildlife attitudes and place attachment predict the willingness of recreational pilots engage in impact-mitigating behaviors. I measured physiological stress through non-invasive sampling of stress hormones in fecal samples (fecal glucocorticoid …


Relationships And Sports: Mechanisms In Relational Motivation And Its Impact On Athletic Performance, Alexandra Szarabajko Jan 2016

Relationships And Sports: Mechanisms In Relational Motivation And Its Impact On Athletic Performance, Alexandra Szarabajko

Online Theses and Dissertations

Relationally-Autonomous Reasons (RARs) for pursuing goals are motives that take one’s own personal needs and the needs and desires of close others into account. These relational reasons motivate people in pursing health, school, or sports goals. The purpose of this study was to identify what mechanisms drive relational motivation that in turn affects athletic performance. Participants (n = 156) in this study were student-athletes from various sports, who completed a questionnaire. Athletic performance was obtained and standardized through each athlete’s performance statistics within their sport. The results of the study revealed that closeness, support, accountability, and shared values predicted relational …


When Focusing On Differences Leads To Similar Perspectives: A Replication Study Of Todd, Hanko, Galinsky, And Mussweiler (2011), Cassie Marie Whitt Jan 2016

When Focusing On Differences Leads To Similar Perspectives: A Replication Study Of Todd, Hanko, Galinsky, And Mussweiler (2011), Cassie Marie Whitt

Online Theses and Dissertations

Todd et al., (2011) found support for the hypothesis that participants primed with a difference mind-set were more likely to spontaneously adopt an other-oriented visual perspective than participants primed with a similarity mind-set or participants in a control condition. The current study was an attempt to directly replicate this finding using American and German samples collected via Amazon’s Mechanical Turk. The project utilized the ‘Replication Recipe’ (Brandt et. al, 2014) to facilitate the replication process and set the conditions necessary for replication access. The replication was deemed inconclusive; possible explanations are discussed.


Slam Poetry: An Online Intervention For Treating Depression, Spencer J. Ruchti, Mercedes Becker, Cara Mckee, Austin Herron, Alex Swalling Jan 2016

Slam Poetry: An Online Intervention For Treating Depression, Spencer J. Ruchti, Mercedes Becker, Cara Mckee, Austin Herron, Alex Swalling

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Given that depression is the “leading cause of disability worldwide,” and that less than 50% of people suffering from depression receive treatment, this study aims to provide support for a globally accessible depression treatment (WHO, 2012). The study conducted implemented an internet-based treatment for depression in which users were provided an opportunity to watch slam poetry videos related to mental health issues and write free responses regarding the content of the videos and their subjective experience of depression. Numerous studies provide support for the effectiveness of expressive writing, online mental health interventions, and slam poetry in particular for reducing symptoms …


Textbook-Bundled Metacognitive Tools: A Study Of Learnsmart’S Efficacy In General Chemistry, Vandana Thadani, Nicole C. Bouvier-Brown Jan 2016

Textbook-Bundled Metacognitive Tools: A Study Of Learnsmart’S Efficacy In General Chemistry, Vandana Thadani, Nicole C. Bouvier-Brown

Psychological Science Faculty Works

College textbook publishers increasingly bundle sophisticated technology-based study tools with their texts. These tools appear promising, but empirical work on their efficacy is needed. We examined whether LearnSmart, a study tool bundled with McGraw-Hill’s textbook Chemistry (Chang & Goldsby, 2013), improved learning in an undergraduate general chemistry course. Content-knowledge gains of those students who used LearnSmart, those who did not use it, and those who used it with scaffolding questions that supported use of the tool’s metacognitive features were compared. The metacognitive scaffolding questions appeared to help students use LearnSmart more effectively than did using LearnSmart by itself, which did …


Healthcare Stereotype Threat In Older Adults In The Health And Retirement Study, Adam W. Fingerhut, Cleopatra M. Abdou, James S. Jackson, Felicia Wheaton Jan 2016

Healthcare Stereotype Threat In Older Adults In The Health And Retirement Study, Adam W. Fingerhut, Cleopatra M. Abdou, James S. Jackson, Felicia Wheaton

Psychological Science Faculty Works

Introduction

Healthcare stereotype threat is the threat of being personally reduced to group stereotypes that commonly operate within the healthcare domain, including stereotypes regarding unhealthy lifestyles and inferior intelligence. The objective of this study was to assess the extent to which people fear being judged in healthcare contexts on several characteristics, including race/ethnicity and age, and to test predictions that experience of such threats would be connected with poorer health and negative perceptions of health care.

Methods

Data were collected as part of the 2012 Health and Retirement Study (HRS). A module on healthcare stereotype threat, designed by the research …


Perceived Impact Of Prevention And Relationship Enhancement Program (Prep) On Marital Satisfaction, Angel Shantella Pierce Jan 2016

Perceived Impact Of Prevention And Relationship Enhancement Program (Prep) On Marital Satisfaction, Angel Shantella Pierce

Walden Dissertations and Doctoral Studies

Married couples often face serious issues that require them to make difficult decisions in their relationships. Many couples turn to marital counseling as a means to improve the marriage. The purpose of this phenomenological study was to understand and describe the experiences of heterosexual married individuals who participated in the Prevention and Relationship Enhancement Program (PREP) and how they felt their participation had influenced their perceived satisfaction in their marriages. The theoretical framework that guided this study was social exchange theory, which is a basis for thinking about the influence individuals have on each other in personal relationships. The research …


Effect Of Violent And Nonviolent Risk Factors On Depression In Postpartum Mothers, Brandi Reliance Spaulding Jan 2016

Effect Of Violent And Nonviolent Risk Factors On Depression In Postpartum Mothers, Brandi Reliance Spaulding

Walden Dissertations and Doctoral Studies

The purpose of this quantitative, nonexperimental study was to analyze and explore the predictors for postpartum depression (PPD) and the strength of these predictors using a secondary data set from the Fragile Families and Child Wellbeing Study from Princeton, Pennsylvania State, and Columbia Universities. By incorporating the biopsychosocial model and feminist theory as the theoretical frameworks for this research, PPD was conceptualized as a serious, multidimensional psychological condition. Using logistic regression, many predictors were identified as etiological for PPD, including subjective attitudes about ideal and introjected characteristics ascribed to women as primary caretakers. These beliefs prevent the extension and acceptance …


Emotional Dysregulation And Adaptive Skills Among Siblings Of Bipolar Children, Nikki Marie Woller Jan 2016

Emotional Dysregulation And Adaptive Skills Among Siblings Of Bipolar Children, Nikki Marie Woller

Walden Dissertations and Doctoral Studies

The purpose of this study was to understand the effects of pediatric bipolar disorder on child siblings. A quantitative quasi-experimental research design was used. According to family systems theory, which was used in the formation of this study, all family members are interconnected and affect each other in a variety of ways. The research questions investigated whether children demonstrated more emotional dysregulation and fewer adaptive skills when a bipolar sibling was living in the home than when there was no bipolar sibling. The matched comparison study used 2 groups of children: those with bipolar siblings and those without bipolar siblings. …


Chronic Pain Causal Attributions In An Interdisciplinary Primary Care Clinic: Patient-Provider And Provider-Provider Discrepancies, Bryan Jensen Jan 2016

Chronic Pain Causal Attributions In An Interdisciplinary Primary Care Clinic: Patient-Provider And Provider-Provider Discrepancies, Bryan Jensen

Theses and Dissertations

The purpose of the present study was to investigate the influence of pain causal attributions on patient pain-related functioning, treatment engagement, and clinical outcomes. Additionally, the impact of discordant pain causal attributions between patients and their providers as well as between interdisciplinary providers was examined. Patients rated their pain functioning and causal pain attributions during a regular clinic visit. Following the patient’s visit both the behavioral medicine provider and internal medicine resident provided ratings of similar pain-related functioning domains and causal attributions. Follow-up data were collected from the electronic medical record three months following that clinic visit. Overall, results revealed …


Identifying Misconceptions Associated With Inaccurate Survey Reporting In The Combined Use Of Caffeine And Alcohol, Kathryn Polak Jan 2016

Identifying Misconceptions Associated With Inaccurate Survey Reporting In The Combined Use Of Caffeine And Alcohol, Kathryn Polak

Theses and Dissertations

Research on college student use of caffeine combined with alcohol (CAC) and public health concern over such use has been hampered by the absence of psychometrically sound measures of caffeine and CAC use. The present study examined agreement between survey (CAS) and interview (TLFB) methods for collecting data on caffeine, alcohol and CAC use. Participants were N=50 college students randomized to complete CAS followed by TLFB or the reverse. Qualitative follow-up interviews with N=15 participants were used to identify factors contributing to CAS-TLFB discrepancies. Responses varied by method of administration, with largest discrepancy magnitudes found for CAC, followed …


Factors Predicting African American Renal Patients’ Completion Of The Medical Evaluation Process For Kidney Transplantation, Camilla W. Nonterah Jan 2016

Factors Predicting African American Renal Patients’ Completion Of The Medical Evaluation Process For Kidney Transplantation, Camilla W. Nonterah

Theses and Dissertations

African Americans (AA) are more susceptible to end-stage renal disease (ESRD) for several reasons. Treatment options for patients with ESRD include dialysis therapy and transplantation, with the latter typically producing better outcomes. AA are less likely to complete the medical evaluation process, which requires patients to consult with doctors and undergo a series of tests and examinations. This study sought to determine the factors that predict completion of the medical evaluation for AA ESRD patients using a mixed methods design. Participants consisted of transplant professionals (N=23) recruited from nine transplant centers in the Mid-Atlantic, Mid-Western and Southeastern parts …


The Relationship Between Christian Religiosity And Heterosexism In The Southern United States, Patricia Hare Jan 2016

The Relationship Between Christian Religiosity And Heterosexism In The Southern United States, Patricia Hare

Walden Dissertations and Doctoral Studies

The internalization of heterosexism places lesbian, gay, and bisexual (LGB) individuals at disproportionately higher risks of depression and self-destructive behaviors. For LGB Christians, this phenomenon is often exacerbated. Although literature on heterosexism has increased, little research has examined more insular, religious environments. The purpose of this study was to examine the relationship between Christian denominational religiosity and heterosexism and to compare the degree of religiosity and heterosexism between members of 5 Christian denominations and between same-sex sexuality perspectives in the southern United States. Guided by the attribution theory, a correlational, cross-sectional survey design was used to analyze degree of religiosity …


An Examination Of The Technical And Relational Hypotheses Of Motivational Interviewing In A Sample Of African American Adolescent Girls Seeking Obesity Treatment, Rachel L. Boutte Jan 2016

An Examination Of The Technical And Relational Hypotheses Of Motivational Interviewing In A Sample Of African American Adolescent Girls Seeking Obesity Treatment, Rachel L. Boutte

Theses and Dissertations

Adolescent obesity has increased exponentially over the past three decades in the United States. In response, behavioral interventions have been developed and implemented to address this epidemic; however, treatment adherence is often suboptimal. Motivational interviewing (MI) is a directive, person centered approach to reducing patient ambivalence about change, which has been shown to increase engagement in obesity interventions. The current study investigated the underlying process of MI by exploring two different, but related pathways that explain how change happens (e.g., the technical and relational hypotheses) in the context of a multidisciplinary obesity intervention with African American adolescent girls (N …


Identification And Examination Of Key Components Of Active Learning, Darrell Scott Kelly Jan 2016

Identification And Examination Of Key Components Of Active Learning, Darrell Scott Kelly

Browse all Theses and Dissertations

The purpose of this study was to examine key components of active learning. I hypothesized that feedback, accountability, and guided exploration were key components of active learning. I collected survey data from second year medical students (N = 103) in three different active learning interventions: peer instruction (PI), team-based learning (TBL), and problem-based learning (PBL), at six time points. My results did not consistently support my hypotheses. However, I observed a pattern of differences concerning feedback and accountability in the predicted direction in all three interventions. Feedback had a positive effect on professionalism in both PI and PBL, and accountability …


The Influence Of Implicit And Explicit Gender Bias On Grading, And The Effectiveness Of Rubrics For Reducing Bias, Sarah Marie Jackson Jan 2016

The Influence Of Implicit And Explicit Gender Bias On Grading, And The Effectiveness Of Rubrics For Reducing Bias, Sarah Marie Jackson

Browse all Theses and Dissertations

The effect of implicit bias on discriminatory grading in education has received considerable attention but, to date, no study has examined the effectiveness of using a rubric to reduce biased grading. Current research has demonstrated that the presence of a gender-normative name is sufficient to activate implicit gender bias, which can result in disparate treatment. The purpose of this study was to examine the effects of implicit and explicit gender bias on grading decisions for written assignments. When grading identical essays on the topic of computers (stereotypically-male), participants assigned significantly lower grades when the essay was supposedly written by a …


The Effect Of Inversion And Motor Expertise On Body Compatibility, Harrison M. Goodall Iii Jan 2016

The Effect Of Inversion And Motor Expertise On Body Compatibility, Harrison M. Goodall Iii

Pomona Senior Theses

Previous studies have established that when a subject’s attention is directed to a specific body part, the subject is able to move that body part faster than a body part their attention was not drawn to. This is known as the body compatibility effect, and it has been shown that this effect only occurs when viewing upright images of the human body. In this study, we presented control subjects and expert acrobats with inverted and upright stimuli. We hypothesized that the amount of time the acrobats spent inverted would result in the acrobats exhibiting body compatibility effects for both upright …


Altruism, Alexander J. Field Jan 2016

Altruism, Alexander J. Field

Economics

Altruism is reflected in actions by one individual that benefit another, even when there is no expectation of reward. Altruism is often equated with selflessness and contrasted with selfishness, or alternatively, altruism is seen as other-regarding as opposed to self-regarding behavior. The latter usage is sometimes preferred because of difficulties in classifying behavior for which the individual acting altruistically receives a "warm glow" from helping others. The question raised in this instance is whether such an individual is actually selfish and, if so, whether there is any behavior that, after the fact, could not be interpreted as selfish.

The need …


Bullying Intervention In Adolescence: The Intersection Of Legislation, Policies, And Behavioral Change, Susan M. Swearer, Meredith Martin, Marc Brackett, Raul A. Palacios Ii Jan 2016

Bullying Intervention In Adolescence: The Intersection Of Legislation, Policies, And Behavioral Change, Susan M. Swearer, Meredith Martin, Marc Brackett, Raul A. Palacios Ii

Department of Educational Psychology: Faculty Publications

This article reviews current research on bullying during adolescence. The complexity of bullying behaviors during the adolescent time period are discussed and a review of the developmental literature on adolescence provides suggestions for why current bullying prevention and intervention programs are less effective for this age group. Current anti-bullying policies and legislation are reviewed under a framework of adolescent brain development and the development of consequential thinking. Suggestions for implementing social-emotional learning programming during the adolescent period are provided and a novel approach using social media is presented. In order to effectively combat bullying during this developmental period, programming must …


Does Child Temperament Modify The Overweight Risk Associated With Parent Feeding Behaviors And Child Eating Behaviors?: An Exploratory Study, Allan D. Tate, Amanda Trofholz, Kathleen Moritz Rudasill, Dianne Neumark-Sztainer, Jerica M. Berge Jan 2016

Does Child Temperament Modify The Overweight Risk Associated With Parent Feeding Behaviors And Child Eating Behaviors?: An Exploratory Study, Allan D. Tate, Amanda Trofholz, Kathleen Moritz Rudasill, Dianne Neumark-Sztainer, Jerica M. Berge

Department of Educational Psychology: Faculty Publications

Background: Child temperament is a measure of an individual’s behavioral tendencies. The primary objective of this study was to examine whether child temperament modified the overweight risk associated with parent feeding behaviors and child eating behaviors. Methods: A sample of predominantly African American, Midwest families (N = 120) recruited from four metropolitan primary care clinics participated in this cross-sectional, mixed methods study. Parents reported on feeding practices, child eating behaviors, and child temperament. Results: Difficult temperament was not statistically related to parent feeding practices or child eating behaviors (p > 0.05). Tests of interaction indicated that the risk …


Temperament And Teacher–Child Conflict In Preschool: The Moderating Roles Of Classroom Instructional And Emotional Support, Kathleen Moritz Rudasill, Leslie Hawley, Victoria J. Molfese, Xiaoqing Tu, Amanda Prokasky, Kate Sirota Jan 2016

Temperament And Teacher–Child Conflict In Preschool: The Moderating Roles Of Classroom Instructional And Emotional Support, Kathleen Moritz Rudasill, Leslie Hawley, Victoria J. Molfese, Xiaoqing Tu, Amanda Prokasky, Kate Sirota

Department of Educational Psychology: Faculty Publications

Research Findings: This study is an examination of (a) links between preschool children’s temperament (effortful control, shyness, and anger) and teacher– child conflict and (b) classroom instructional and emotional support as moderators of associations between temperament and teacher–child conflict. Children (N = 104) were enrolled in 23 classrooms in 9 preschools in a Midwestern city. Teachers provided ratings of children’s temperament and parents reported demographic information in the fall of the school year, classrooms were observed in the winter to assess instructional and emotional support, and teachers rated conflict with children in the spring. Multilevel models were estimated, and 3 …


Parent-Teacher Communication About Children With Autism Spectrum Disorder: An Examination Of Collaborative Problem- Solving, Gazi F. Azad Phd, Mina Kim Med, Steven C. Marcus Phd, Susan Sheridan Phd Jan 2016

Parent-Teacher Communication About Children With Autism Spectrum Disorder: An Examination Of Collaborative Problem- Solving, Gazi F. Azad Phd, Mina Kim Med, Steven C. Marcus Phd, Susan Sheridan Phd

Department of Educational Psychology: Faculty Publications

Effective parent-teacher communication involves problem-solving concerns about students. Few studies have examined problem solving interactions between parents and teachers of children with autism spectrum disorder (ASD), with a particular focus on identifying communication barriers and strategies for improving them. This study examined the problem-solving behaviors of parents and teachers of children with ASD. Participants included 18 teachers and 39 parents of children with ASD. Parent-teacher dyads were prompted to discuss and provide a solution for a problem that a student experienced at home and at school. Parents and teachers also reported on their problem-solving behaviors. Results showed that parents and …


Adolescence In Lifespan Perspective: Review Of Laurence Steinberg, Age Of Opportunity: Lessons From The New Science Of Adolescence, David Moshman Jan 2016

Adolescence In Lifespan Perspective: Review Of Laurence Steinberg, Age Of Opportunity: Lessons From The New Science Of Adolescence, David Moshman

Department of Educational Psychology: Faculty Publications

Laurence Steinberg, Age of opportunity: Lessons from the new science of adolescence. Houghton Mifflin Harcourt, Boston, 2014, ISBN: 978-0-544-27977-3 (cloth), 264 pp., $28

Adolescence, argues Laurence Steinberg in Age of opportunity, is the new zero-to-three. Noting the extensive publicity regarding evidence of the developmental plasticity of the very young brain, Steinberg writes, “We now know that adolescence is a similarly remarkable period of brain reorganization and plasticity” (p. 22).

As indicated in the subtitle, the book's intent is to provide “lessons from the new science of adolescence.” What is the new science of adolescence? Brain science. And what are …


Reflections Of The Social Environment In Chimpanzee Memory: Applying Rational Analysis Beyond Humans, Jeffrey R. Stevens, Julian N. Marewski, Lael J. Schooler, Ian C. Gilby Jan 2016

Reflections Of The Social Environment In Chimpanzee Memory: Applying Rational Analysis Beyond Humans, Jeffrey R. Stevens, Julian N. Marewski, Lael J. Schooler, Ian C. Gilby

Jeffrey Stevens Publications

In cognitive science, the rational analysis framework allows modelling of how physical and social environments impose information-processing demands onto cognitive systems. In humans, for example, past social contact among individuals predicts their future contact with linear and power functions. These features of the human environment constrain the optimal way to remember information and probably shape how memory records are retained and retrieved. We offer a primer on how biologists can apply rational analysis to study animal behaviour. Using chimpanzees (Pan troglodytes) as a case study, we modelled 19 years of observational data on their social contact patterns. Much …


Cognitive Phenotypes And The Evolution Of Animal Decisions, Tamra C. Mendelson, Courtney L. Fitzpatrick, Mark E. Hauber, Charles H. Pence, Rafael L. Rodriguez, Rebecca J. Safran, Caitlin A. Stern, Jeffrey R. Stevens Jan 2016

Cognitive Phenotypes And The Evolution Of Animal Decisions, Tamra C. Mendelson, Courtney L. Fitzpatrick, Mark E. Hauber, Charles H. Pence, Rafael L. Rodriguez, Rebecca J. Safran, Caitlin A. Stern, Jeffrey R. Stevens

Jeffrey Stevens Publications

Despite the clear fitness consequences of animal decisions, the science of animal decision making in evolutionary biology is underdeveloped compared with decision science in human psychology. Specifically, the field lacks a conceptual framework that defines and describes the relevant components of a decision, leading to imprecise language and concepts. The ‘judgment and decision-making’ (JDM) framework in human psychology is a powerful tool for framing and understanding human decisions, and we apply it here to components of animal decisions, which we refer to as ‘cognitive phenotypes’. We distinguish multiple cognitive phenotypes in the context of a JDM framework and highlight empirical …


Context-Dependent Seed Dispersal By A Scatter-Hoarding Corvid, Mario B. Pesendorfer, T. Scott Sillett, Scott A. Morrison, Alan C. Kamil Jan 2016

Context-Dependent Seed Dispersal By A Scatter-Hoarding Corvid, Mario B. Pesendorfer, T. Scott Sillett, Scott A. Morrison, Alan C. Kamil

Avian Cognition Papers

1. Corvids (crows, jays, magpies and nutcrackers) are important dispersers of large-seeded plants. Studies on captive or supplemented birds suggest that they flexibly adjust their scatter-hoarding behavior to the context of social dynamics and relative seed availability. Because many corvid-dispersed trees show high annual variation in seed production, context-dependent foraging can have strong effects on natural corvid scatter-hoarding behavior.

2. We investigated how seed availability and social dynamics affected scatter-hoarding in the island scrub jays (Aphelocoma insularis). We quantified rates of scatter-hoarding behavior and territorial defense of 26 colormarked birds over a three-year period with variable acorn crops. …