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Psychology

Selected Works

2015

Articles 31 - 60 of 82

Full-Text Articles in Medicine and Health Sciences

Environmental Change Alters Personality In The Rainbow Trout, Oncorhynchus Mykiss, Ashley J. Frost, Jack S. Thomson, Charlotte Smith, Hannah C. Burton, Ben Davis, Phillip C. Watts, Lynne U. Sneddon Aug 2015

Environmental Change Alters Personality In The Rainbow Trout, Oncorhynchus Mykiss, Ashley J. Frost, Jack S. Thomson, Charlotte Smith, Hannah C. Burton, Ben Davis, Phillip C. Watts, Lynne U. Sneddon

Lynne Sneddon, PhD

Boldness is a personality trait that defines how individuals respond to risky situations and has clear fitness consequences. Since the adaptive value of boldness is context dependent, the benefit of a distinct personality is less clear when the environment is unpredictable. An ability to modulate behaviour can be beneficial, although as behavioural plasticity itself may be costly this depends on the levels of environmental stability. Both boldness and its plasticity are linked with physiological stress coping mechanisms, whereby animals with reduced glucocorticoid responses to stress are bolder and less flexible in behaviour. We investigated the behavioural changes made by bold …

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Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon Jul 2015

Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon

Lynne U. Sneddon, Ph.D.

Boldness, a measure of an individual's propensity for taking risks, is an important determinant of fitness but is not necessarily a fixed trait. Dependent upon an individual's state, and given certain contexts or challenges, individuals may be able to alter their inclination to be bold or shy in response. Furthermore, the degree to which individuals can modulate their behaviour has been linked with physiological responses to stress. Here we attempted to determine whether bold and shy rainbow trout, Oncorhynchus mykiss, can exhibit behavioural plasticity in response to changes in state (nutritional availability) and context (predation threat). Individual trout were initially …

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Measuring Individual Burden Of Illness For Depression Among Prostate Cancer Patients, Christopher Sharpley, Vicki Bitsika, David Christie Jul 2015

Measuring Individual Burden Of Illness For Depression Among Prostate Cancer Patients, Christopher Sharpley, Vicki Bitsika, David Christie

Vicki Bitsika

Objective: This study aims to develop and test three potential models of Individual Burden of Illness for Depression (IBI-D) in prostate cancer patients. Methods: Responses to three sets of scales measuring depressive symptoms, functional impairment, and quality of life satisfaction were collected from 191 prostate cancer patients and analysed via principal components analysis to obtain weightings for each of the scales within the three sets of measures. These weightings were then used to form IBI-D Indices, and these were then compared with depressive symptoms alone for their overlap. Results: Single-factor solutions were found for each of the three IBI-D models, …

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The Influence Of Gender, Age, Psychological Resilience And Family Interaction Factors Upon Anxiety And Depression In Non-Autism Spectrum Disorder Siblings Of Children With An Autism Spectrum Disorder, Vicki Bitsika, Christopher Sharpley, Rebecca Mailli Jul 2015

The Influence Of Gender, Age, Psychological Resilience And Family Interaction Factors Upon Anxiety And Depression In Non-Autism Spectrum Disorder Siblings Of Children With An Autism Spectrum Disorder, Vicki Bitsika, Christopher Sharpley, Rebecca Mailli

Vicki Bitsika

The influence of gender, age, Psychological resilience and family interaction factors upon generalised anxiety disorder (GAD) and major depressive disorder (MDD) was investigated in 75 non-autism spectrum disorder (NASD) siblings who had a brother or sister with an autism spectrum disorder (ASD). GAD and MDD were much more prevalent than in comparable age group samples, and adolescent females had the highest MDD rates. Several Psychological resilience skills were significantly associated with lower GAD and MDD, particularly being able to recognise mistakes in their thinking (for children) and being able to remain in control of their anger (for adolescents). Suggestions are …

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Understanding, Experiences, And Reactions To Bullying Experiences In Boys With An Autism Spectrum Disorder, Vicki Bitsika, Christopher Sharpley Jul 2015

Understanding, Experiences, And Reactions To Bullying Experiences In Boys With An Autism Spectrum Disorder, Vicki Bitsika, Christopher Sharpley

Vicki Bitsika

Most previous studies of bullying in young people with an Autism Spectrum Disorder (ASD) have relied on data from adults’ rather than the person with an ASD themselves, thus limiting our understanding of the bullying experience from the child’s perspective. To investigate this issue, 48 high-functioning boys with an ASD, and their mothers, completed an online questionnaire about various aspects of bullying. There were some minor discrepancies between mothers’ and their sons’ reported frequency of bullying. Boys demonstrated an understanding of the behaviour that constitutes bullying that was consistent with the wider literature, enhancing the validity of their responses about …

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Variability In Depressive Symptoms Of Cognitive Deficit And Cognitive Bias During The First 2 Years After Diagnosis In Australian Men With Prostate Cancer, Christopher Sharpley, Vicki Bitsika, David Christie Jul 2015

Variability In Depressive Symptoms Of Cognitive Deficit And Cognitive Bias During The First 2 Years After Diagnosis In Australian Men With Prostate Cancer, Christopher Sharpley, Vicki Bitsika, David Christie

Vicki Bitsika

The incidence and contribution to total depression of the depressive symptoms of cognitive deficit and cognitive bias in prostate cancer (PCa) patients were compared from cohorts sampled during the first 2 years after diagnosis. Survey data were collected from 394 patients with PCa, including background information, treatments, and disease status, plus total scores of depression and scores for subscales of the depressive symptoms of cognitive bias and cognitive deficit via the Zung Self-Rating Depression Scale. The sample was divided into eight 3-monthly time-since-diagnosis cohorts and according to depression severity. Mean scores for the depressive symptoms of cognitive deficit were significantly …

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Differences In Major Depressive Disorder And Generalised Anxiety Disorder Symptomatology Between Prostate Cancer Patients Receiving Hormone Therapy And Those Who Are Not, Christopher Sharpley, Vicki Bitsika, Addie Wootten, David Christie Jul 2015

Differences In Major Depressive Disorder And Generalised Anxiety Disorder Symptomatology Between Prostate Cancer Patients Receiving Hormone Therapy And Those Who Are Not, Christopher Sharpley, Vicki Bitsika, Addie Wootten, David Christie

Vicki Bitsika

Objective: The aim of this study is to explore the associations between hormone treatment variables and depression, and the nature of depression in prostate cancer (PCa) patients by comparing the severity and symptom profile of anxiety and depression in men who were currently receiving hormone therapy (HT) versus those who were not. Method: Self-reports of anxiety and depression on standardized scales of GAD and major depressive disorder (MDD) were collected from 156 PCa patients across two recruitment sites in Australia. Patients who were currently receiving HT were compared with patients not receiving HT for their severity and symptom profiles on …

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Variation In The Profile Of Anxiety Disorders In Boys With An Asd According To Method And Source Of Assessment, Vicki Bitsika, Christopher Sharpley Jul 2015

Variation In The Profile Of Anxiety Disorders In Boys With An Asd According To Method And Source Of Assessment, Vicki Bitsika, Christopher Sharpley

Vicki Bitsika

To determine any variation that might occur due to the type of assessment and source used to assess them, the prevalence of 7 anxiety disorders were investigated in a sample of 140 boys with an Autism spectrum disorder (ASD) and 50 non-ASD (NASD) boys via the Child and Adolescent Symptom Inventory and the KIDSCID Clinical Interview. Boys with an ASD were significantly more anxious than their NASD peers. Data collected from the boys with an ASD themselves showed differences in the severity and diagnostic criterion of anxiety disorders to data collected from the boys’ parents. There were age-related variations to …

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Predictors Of Depression In Prostate Cancer Patients: A Comparison Of Psychological Resilience Versus Pre-Existing Anxiety And Depression, Christopher Sharpley, Vicki Bitsika, Addie Wootten, David Christie Jul 2015

Predictors Of Depression In Prostate Cancer Patients: A Comparison Of Psychological Resilience Versus Pre-Existing Anxiety And Depression, Christopher Sharpley, Vicki Bitsika, Addie Wootten, David Christie

Vicki Bitsika

Background: Previous anxiety and depression can influence current anxiety and depression, and psychological resilience may be a buffer against current anxiety and depression. However, despite the relevance of these two sets of predictors of anxiety and depression, and their potential in treatment planning, no reports have been published on their role in post-diagnosis anxiety and depression among prostate cancer (PCa) patients. Therefore, this study aimed to determine the roles of these predictors in a sample of men with prostate cancer. Method: Retrospective self-reports of anxiety and depression for how they were before receiving their diagnosis of PCa and at the …

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Thinking Pigs: A Comparative Review Of Cognition, Emotion, And Personality In Sus Domesticus, Lori Marino, Christina M. Colvin Jul 2015

Thinking Pigs: A Comparative Review Of Cognition, Emotion, And Personality In Sus Domesticus, Lori Marino, Christina M. Colvin

Lori Marino, PhD

While relatively little is known about the psychology of domestic pigs, what is known suggests that pigs are cognitively complex and share many traits with animals whom we consider intelligent. This paper reviews the scientific evidence for cognitive complexity in domestic pigs and, when appropriate, compares this literature with similar findings in other animals, focusing on some of the more compelling and cutting-edge research results. The goals of this paper are to: 1) frame pig cognition and psychology in a basic comparative context independent of the livestock production and management setting; and 2) identify areas of research with pigs that …

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Interaction Among Gustation, Olfaction, And Vision In Flavor Identification, Michael Lauth Jul 2015

Interaction Among Gustation, Olfaction, And Vision In Flavor Identification, Michael Lauth

Michael Lauth

Even though the senses of taste, smell, and sight are distinct, there is a significant overlap among them in our perceptions of objects that helps us understand and differentiate the world. Everyone has experienced, when his or her nose gets congested, that his or her sense of taste changes as well. Many individuals do not equally understand the top-down processing with taste when someone sees objects they are about to eat. In the replicated study by our principle investigator, a random convenience sample of young adults (n=162) were recruited and tested to determine if they could taste four Jelly Belly …

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An Investigation Of The Characteristics Of Muscle Dysmorphia In A Non-Clinical Population Of Adult Male Weight Lifters In Australia, Johanna Elizabeth Nieuwoudt Jun 2015

An Investigation Of The Characteristics Of Muscle Dysmorphia In A Non-Clinical Population Of Adult Male Weight Lifters In Australia, Johanna Elizabeth Nieuwoudt

Dr Johanna E Nieuwoudt

This thesis investigated the characteristics of muscle dysmorphia (MD) among adult weight lifters in Australia. Results of Study 1 (N = 48) indicated low inter-rater reliability for the proposed MD criteria, and that MD represented a syndrome of frequently co-occurring symptoms.Results of Study 2 (N = 648) indicated participants were at risk of having MD (17%), body dysmorphic disorder (10.6%), and eating disorders (33.8%). Evidence was provided for the comorbidity of, and symptomatic similarities between, symptoms of MD and body dysmorphic disorder, and symptoms of MD and eating disorders.

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The Dance Of Life: A Cognitive & Contextual Theory Of Adult Development, T. L. Brink Jun 2015

The Dance Of Life: A Cognitive & Contextual Theory Of Adult Development, T. L. Brink

T. L. Brink

Adult development cannot be conceptualized by stage theories, but involves numerous competing roles. Religion can be a force for resilience.

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Defining And Assessing Animal Pain, Lynne U. Sneddon, Robert W. Elwood, Shelley A. Adamo, Matthew C. Leach Jun 2015

Defining And Assessing Animal Pain, Lynne U. Sneddon, Robert W. Elwood, Shelley A. Adamo, Matthew C. Leach

Lynne Sneddon, PhD

The detection and assessment of pain in animals is crucial to improving their welfare in a variety of contexts in which humans are ethically or legally bound to do so. Thus clear standards to judge whether pain is likely to occur in any animal species is vital to inform whether to alleviate pain or to drive the refinement of procedures to reduce invasiveness, thereby minimizing pain. We define two key concepts that can be used to evaluate the potential for pain in both invertebrate and vertebrate taxa. First, responses to noxious, potentially painful events should affect neurobiology, physiology and behaviour …

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Relative Reward Effects On Operant Behavior: Incentive Contrast,Induction And Variety Effects, Howard Cromwell May 2015

Relative Reward Effects On Operant Behavior: Incentive Contrast,Induction And Variety Effects, Howard Cromwell

Howard Casey Cromwell

Comparing different rewards automatically produces dynamic relative outcome effects on behavior. Eachnew outcome exposure is to an updated version evaluated relative to alternatives. Relative reward effectsinclude incentive contrast, positive induction and variety effects. The present study utilized a novelbehavioral design to examine relative reward effects on a chain of operant behavior using auditory cues.Incentive contrast is the most often examined effect and focuses on increases or decreases in behavioralperformance after value upshifts (positive) or downshifts (negative) relative to another outcome. Weexamined the impact of comparing two reward outcomes in a repeated measures design with three ses-sions: a single outcome and …

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Construct Validity Of Animal-Assisted Therapy And Activities: How Important Is The Animal In Aat?, Lori Marino May 2015

Construct Validity Of Animal-Assisted Therapy And Activities: How Important Is The Animal In Aat?, Lori Marino

Lori Marino, PhD

Animal-assisted therapy and animal-assisted activities involve a nonhuman animal as a key therapeutic agent in some kind of intervention that may range from highly specified, as in AAT, to more casual, as in AAA. In this review I address the question: How important is the animal in animal therapy? In other words, does the recent literature strongly support the notion that a live animal, as opposed to another novel stimulating component, is specifically necessary for therapeutic success. Two meta-analyses and 28 single empirical studies were reviewed in order to address this issue. I conclude that the effects of AAT and …

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Interactive Video Gaming: Do We Feel Like We Are Exercising?, Antonio Santo, Shaelee Allen, Janet Dufek, Paul Hafen, Michael Jarrett, Krystina Moschella, Robert Rietjens, James Navalta, Richard Tandy, Jacob E. Barkley May 2015

Interactive Video Gaming: Do We Feel Like We Are Exercising?, Antonio Santo, Shaelee Allen, Janet Dufek, Paul Hafen, Michael Jarrett, Krystina Moschella, Robert Rietjens, James Navalta, Richard Tandy, Jacob E. Barkley

Jacob E Barkley

The primary purpose of this study was to determine if the rating of perceived exertion (RPE) and hedonics (liking or enjoyment) changed during 30 contiguous minutes of playing select, interactive video games on the Nintendo Wii system. A secondary purpose was to determine if RPE and liking differed among games.These data suggest that individuals do perceive difference in the amount of work they are performing during extended play of the same game or among sedentary and physically interactive games. Additionally, liking was similar during extended game play and among games suggesting that the physical interaction with the game may be …

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Orangutan Pantomime: Elaborating The Message, Anne Russon, Kristin Andrews May 2015

Orangutan Pantomime: Elaborating The Message, Anne Russon, Kristin Andrews

Kristin Andrews, PhD

We present an exploratory study of forest-living orangutan pantomiming, i.e. gesturing in which they act out their meaning, focusing on its occurrence, communicative functions, and complexities. Studies show that captive great apes may elaborate messages if communication fails, and isolated reports suggest that great apes occasionally pantomime. We predicted forest-living orangutans would pantomime spontaneously to communicate, especially to elaborate after communication failures. Mining existing databases on free-ranging rehabilitant orangutans’ behaviour identified 18 salient pantomimes. These pantomimes most often functioned as elaborations of failed requests, but also as deceptions and declaratives. Complexities identified include multimodality, re-enactments of past events and several …

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Telling Stories Without Words, Kristin Andrews Apr 2015

Telling Stories Without Words, Kristin Andrews

Kristin Andrews, PhD

I will argue here that we can take a functional approach to FP that identifies it with the practice of explaining behaviour -- that is, we can understand folk psychology as having the purpose of explaining behaviour and promoting social cohesion by making others’ behaviour comprehensible, without thinking that this ability must be limited to those with linguistic abilities. One reason for thinking that language must be implicated in FP explanations arises from the history of theorizing about the nature of scientific explanation. I will show that there are other models of explanation that are free from the metaphysical linguistic …

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Pantomime In Great Apes: Evidence And Implications, Ann E. Russon, Kristin Andrews Apr 2015

Pantomime In Great Apes: Evidence And Implications, Ann E. Russon, Kristin Andrews

Kristin Andrews, PhD

We recently demonstrated, by mining observational data, that forest-living orangutans can communicate using gestures that qualify as Pantomime. Pantomimes, like other iconic gestures, physically resemble their referents. More elaborately, pantomimes involve enacting their referents. Holding thumb and finger together at the lips and blowing between them to mean balloon is one example. Here we sketch evidence of pantomime in other great apes, methodological concerns, and sophisticated cognitive capabilities that great ape pantomimes suggest.

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Politics Or Metaphysics? On Attributing Psychological Properties To Animals, Kristin Andrews Apr 2015

Politics Or Metaphysics? On Attributing Psychological Properties To Animals, Kristin Andrews

Kristin Andrews, PhD

Following recent arguments that there is no logical problem with attributing mental or agential states to animals, I address the epistemological problem of how to go about making accurate attributions. I suggest that there is a two-part general method for determining whether a psychological property can be accurately attributed to a member of another species: folk expert opinion and functionality. This method is based on well-known assessments used to attribute mental states to humans who are unable to self-ascribe due to an early stage of development or impairment, and can be used to describe social and emotional development as well …

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It's In Your Nature: A Pluralistic Folk Psychology, Kristin Andrews Apr 2015

It's In Your Nature: A Pluralistic Folk Psychology, Kristin Andrews

Kristin Andrews, PhD

I suggest a pluralistic account of folk psychology according to which not all predictions or explanations rely on the attribution of mental states, and not all intentional actions are explained by mental states. This view of folk psychology is supported by research in developmental and social psychology. It is well known that people use personality traits to predict behavior. I argue that trait attribution is not shorthand for mental state attributions, since traits are not identical to beliefs or desires, and an understanding of belief or desire is not necessary for using trait attributions. In addition, we sometimes predict and …

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Knowing Mental States: The Asymmetry Of Psychological Prediction And Explanation, Kristin Andrews Apr 2015

Knowing Mental States: The Asymmetry Of Psychological Prediction And Explanation, Kristin Andrews

Kristin Andrews, PhD

Some interpretations of the two major theories of how minds understand minds, the theory theory and the simulation theory, conform to this require-ment of the Machiavellian intelligence thesis. Though both the theory theory and the simulation theory originated as accounts of how we understand other minds, it has been suggested that both simulation theory (e.g. Bolton 1995; Gordon 1995) and the theory theory (e.g. Frith and Happe 1999; Bolton 1995; Gopnick and Meltzoff 1994; Carruthers 1996) can also provide an account of how we understand our own minds. The classical account of how we know the contents of our own …

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Cetaceans And Primates: Convergence In Intelligence And Self-Awareness, Lori Marino Apr 2015

Cetaceans And Primates: Convergence In Intelligence And Self-Awareness, Lori Marino

Lori Marino, PhD

Cetaceans (dolphins, porpoises and whales) have been of greatest interest to the astrobiology community and to those interested in consciousness and selfawareness in animals. This interest has grown primarily from knowledge of the intelligence, language and large complex brains that many cetaceans possess. The study of cetacean and primate brain evolution and cognition can inform us about the contingencies and parameters associated with the evolution of complex intelligence in general, and, the evolution of consciousness. Striking differences in cortical organization in the brains of cetaceans and primates along with shared cognitive capacities such as self-awareness, culture, and symbolic concept comprehension, …

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Towards A New Paradigm Of Non-Captive Research On Cetacean Cognition, Lori Marino, Toni Frohoff Apr 2015

Towards A New Paradigm Of Non-Captive Research On Cetacean Cognition, Lori Marino, Toni Frohoff

Lori Marino, PhD

Contemporary knowledge of impressive neurophysiology and behavior in cetaceans, combined with increasing opportunities for studying free-ranging cetaceans who initiate sociable interaction with humans, are converging to highlight serious ethical considerations and emerging opportunities for a new era of progressive and less-invasive cetacean research. Most research on cetacean cognition has taken place in controlled captive settings, e.g., research labs, marine parks. While these environments afford a certain amount of experimental rigor and logistical control they are fraught with limitations in external validity, impose tremendous stress on the part of the captive animals, and place burdens on populations from which they are …

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Sociology And Anthrozoology: Symbolic Interactionist Contributions, Leslie Irvine Apr 2015

Sociology And Anthrozoology: Symbolic Interactionist Contributions, Leslie Irvine

Leslie Irvine, PhD

This essay examines the sociological contributions to anthrozoology, focusing on research from the United States that employs a symbolic interactionist perspective. In particular, the work of Arluke and Sanders highlights the importance of understanding the meanings that animals hold for people. Using a selective review of their research, this essay outlines how a focus on understanding meaning can inform anthrozoological research. Arluke’s research on animal abuse reveals how harm must be defined in context. Sanders’s research on canine–human relationships documents how people come to understand companion dogs as persons. Both bodies of work rely on careful observation and listening to …

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Beyond Anthropomorphism: Attributing Psychological Properties To Animals, Kristin Andrews Apr 2015

Beyond Anthropomorphism: Attributing Psychological Properties To Animals, Kristin Andrews

Kristin Andrews, PhD

In the context of animal cognitive research, “anthropomorphism” is defined as the attribution of uniquely human mental characteristics to non-human animals. Those who worry about anthropomorphism in research are confronted with the question of which properties are uniquely human. As animals, humans and non-human animals1 share a number of biological, morphological, relational, and spatial properties. In addition, it is widely accepted and humans and animals share some psychological properties such as the ability to fear or desire. These claims about the properties animals share with humans are often the products of empirical work.

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Great Ape Mindreading: What’S At Stake?, Kristin Andrews Apr 2015

Great Ape Mindreading: What’S At Stake?, Kristin Andrews

Kristin Andrews, PhD

Humans and other great apes are similar in so many ways. We share an extended immaturity and intense infant-caregiver relationships, group living situations, cultural transmission of technology, and many emotions and cognitive capacities. Yet the communities of nonhuman apes are also very different from human communities. Humans build lasting tools, and store them to use later. We build permanent sleeping and living structures. We cook our food. We have courts of law and prisons and ethics books. There are vast technological differences between humans and nonhuman great apes. What is it that accounts for such a difference? On one account, …

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Confronting Language, Representation, And Belief: A Limited Defense Of Mental Continuity, Kristin Andrews, Ljiljana Radenovic Apr 2015

Confronting Language, Representation, And Belief: A Limited Defense Of Mental Continuity, Kristin Andrews, Ljiljana Radenovic

Kristin Andrews, PhD

According to the mental continuity claim (MCC), human mental faculties are physical and beneficial to human survival, so they must have evolved gradually from ancestral forms and we should expect to see their precursors across species. Materialism of mind coupled with Darwin’s evolutionary theory leads directly to such claims and even today arguments for animal mental properties are often presented with the MCC as a premise. However, the MCC has been often challenged among contemporary scholars. It is usually argued that only humans use language and that language as such has no precursors in the animal kingdom. Moreover, language is …

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Animal Cognition, Kristin Andrews, Ljiljana Radenovic Apr 2015

Animal Cognition, Kristin Andrews, Ljiljana Radenovic

Kristin Andrews, PhD

Debates in applied ethics about the proper treatment of animals often refer to empirical data about animal cognition, emotion, and behavior. In addition, there is increasing interest in the question of whether any nonhuman animal could be something like a moral agent.

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