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Articles 2611 - 2640 of 2918

Full-Text Articles in Psychology

Serotonin1b Receptors In The Ventral Tegmental Area Modulate Cocaine-Induced Elevations Of Dopamine Release In The Nucleus Accumbens, Laura O'Dell Jan 2004

Serotonin1b Receptors In The Ventral Tegmental Area Modulate Cocaine-Induced Elevations Of Dopamine Release In The Nucleus Accumbens, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


The Journal Of Undergraduate Research: Volume 02 Jan 2004

The Journal Of Undergraduate Research: Volume 02

The Journal of Undergraduate Research

This is the complete issue of the South Dakota State University Journal of Undergraduate Research, Volume 2.


Neurobiological Mechanisms In The Transition From Drug Use To Drug Dependence, Laura O'Dell Jan 2004

Neurobiological Mechanisms In The Transition From Drug Use To Drug Dependence, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


The Selfish Nature Of Generosity: Harassment And Food Sharing In Primates, Jeffrey R. Stevens Jan 2004

The Selfish Nature Of Generosity: Harassment And Food Sharing In Primates, Jeffrey R. Stevens

Jeffrey Stevens Publications

Animals may share food to gain immediate or delayed fitness benefits. Previous studies of sharing have concentrated on delayed benefits such as reciprocity, trade and punishment. This study tests an alternative model (the harassment or sharing–under–pressure hypothesis) in which a food owner immediately benefits because sharing avoids costly harassment from a beggar. I present an experiment that varies the potential ability of the beggar to harass, and of the owner to defend the food, to examine the effects of harassment on food sharing in two primate species: chimpanzees (Pan troglodytes) and squirrel monkeys (Saimiri boliviensis). For …


Environmental Enrichment And Prior Experience Of Live Prey Improve Foraging Behaviour In Hatchery-Reared Atlantic Salmon, C. Brown, T. Davidson, K. Laland Dec 2003

Environmental Enrichment And Prior Experience Of Live Prey Improve Foraging Behaviour In Hatchery-Reared Atlantic Salmon, C. Brown, T. Davidson, K. Laland

Aquaculture Collection

Atlantic salmon salmo salar L. parr were reared for 3 months under standard hatchery conditions or in a structurally enriched tank (containing plants, rocks and novel objects). Half of each of these fish had prior exposure to live prey in the form of live bloodworm while the other half were fed hatchery-pellets. After 12 days all fish were tested on a novel live prey item (brine shrimp). A significant interaction between the two factors (prior exposure to live prey and rearing condition) revealed that foraging performance was only enhanced in fish that had been reared in a complex environment and …


The Effects Of Hypnosis And Guided Imagery On The Performance Of Track Athletes, Johnathan C. Mossey Dec 2003

The Effects Of Hypnosis And Guided Imagery On The Performance Of Track Athletes, Johnathan C. Mossey

All-Inclusive List of Electronic Theses and Dissertations

Although sport psychologists may utilize numerous hypnotic interventions and techniques intended to enhance the performance of athletes, many of these interventions have not been examined by systematic research. This exploratory study examined the effects of interventions using imagery and imagery plus hypnosis on the performance of track athletes. Twenty-nine students from a Midwestern high school track team were randomly assigned to one of two intervention groups: a) imagery and hypnosis or b) an imagery only group. Track team members at another high school served as the control group. The athletes in each group had their performance examined at track meets …


Response Cost In The Treatment Of Lunging In Dogs, Jennifer L. Sobie Dec 2003

Response Cost In The Treatment Of Lunging In Dogs, Jennifer L. Sobie

Masters Theses

Contemporary professional applied animal behavior management employs a diagnostic and treatment approach for unwanted pet behavior that incorporates ethology-based causal factors. As in behavior therapy for humans, behavioral assessment includes descriptive functional analysis when possible to determine relevant contingency variables. But this information is then considered in the context of an appropriate motivational classification, such as social or prey-directed motivation or fear-motivated, and treatments are designed accordingly. A different view is that behavior can be treated effectively without a presumption of the motivation through analysis of the manifestation of the behavior itself. This study sought to evaluate the efficacy of …


The Influence Of Music On Preferred Intensity And Associated Physiological Responses, David Nuckols Nov 2003

The Influence Of Music On Preferred Intensity And Associated Physiological Responses, David Nuckols

Masters Theses & Specialist Projects

Music is a part of everyday life and has an effect on people in many different ways. Music can be as individual as the person who listens to it, and thus there are many genres for many different tastes. Music has accompanied exercise and sport for quite some time. It has been shown to have varying psychophysical effects including decreasing ratings of perceived exertion (RPE) at a given sub-max intensity, enhancing arousal control, and affective states at high and medium intensities. Also the improved synchronization of sub-maximal exercise with music may result in increased work output. The proposed ability of …


Novel Object Test: Examining Nociception And Fear In The Rainbow Trout, Lynne U. Sneddon, Victoria A. Braithwaite, Michael J. Gentle Oct 2003

Novel Object Test: Examining Nociception And Fear In The Rainbow Trout, Lynne U. Sneddon, Victoria A. Braithwaite, Michael J. Gentle

Veterinary Science and Medicine Collection

This study aimed to assess fear responses to a novel object while experiencing a noxious event to determine whether nociception or fear will dominate attention in a fish in novel object testing paradigm. This experimentally tractable animal model was used to investigate (1) the degree of neophobia to a novel object while experiencing noxious stimulation, (2) the response of the fish after removing the fear-causing event by using a familiar object, and (3) the effects of removing the nociceptive response by morphine administration and examining the response to a novel object. Control animals displayed a classic fear response to the …


The Relationship Between Health Status And Hope In Individuals With Hiv Disease, Celine Meera Chohan Sep 2003

The Relationship Between Health Status And Hope In Individuals With Hiv Disease, Celine Meera Chohan

All-Inclusive List of Electronic Theses and Dissertations

This study examined the relationship between hope and health status over a two-year period in individuals who were HIV -infected. One hundred and three individuals completed the surveys at entry into the study, at 12 months, and at 24 months. The Health Status Questionnaire (Wu et.al., 1991) measured Cognitive Functioning, Emotional Functioning, and Physical Functioning. Additionally, the Hope Scale (Snyder, 1991) and the Client Information Form were used to collect data. Results suggested hope at entry into the study was a significant predictor of physical functioning initially, at 12 months, and at 24 months. This finding suggests a link between …


Social Learning Of Prey Location In Hatchery-Reared Atlantic Salmon, C. Brown, A. Markula, K. Laland Sep 2003

Social Learning Of Prey Location In Hatchery-Reared Atlantic Salmon, C. Brown, A. Markula, K. Laland

Aquaculture Collection

Naïve, hatchery-reared Atlantic salmon Salmo salar parr were paired with demonstrators that had been pre-trained to accept live prey from the surface or from the benthos. After 6 days of observing demonstrators through a clear perspex partition the naïve fish’s benthic foraging skills were tested. The results revealed that hatchery-reared Atlantic salmon can be taught to target benthic prey items by observation alone and social learning protocols can be utilized to dramatically increase benthic foraging success. The results are discussed with reference to refining hatchery-rearing practices with a view to improving the post-release survival of hatchery fishes. The role of …


A Longitudinal Examination Of Flow As A Predictor Of Recreational Exercise, Brian Michael Chichester Sep 2003

A Longitudinal Examination Of Flow As A Predictor Of Recreational Exercise, Brian Michael Chichester

Loma Linda University Electronic Theses, Dissertations & Projects

Flow state is a valued psychological state of enjoyment and well-being. It is characterized by feelings of intrinsic self-reward and marked by nine dimensions theorized to contribute to flow state. Flow has been studied mostly in elite athletes, whom report highly lucid flow experiences; to a much lesser extent it has been studied in recreational exercisers. Most prior research methodologies involve experience sampling or qualitative techniques, such as interviewing. Only one demonstrably valid and reliable flow instrument is widely available for efficient, quantitative measure of flow experiences. This study measures flow longitudinally in a recreational exercising population by comparing a …


The Psychological Characteristics Of Obese Children, Thomas Taylor Mitchell Sep 2003

The Psychological Characteristics Of Obese Children, Thomas Taylor Mitchell

Loma Linda University Electronic Theses, Dissertations & Projects

Several studies along with the surgeon general of the United States have identified obesity as a national health issue. Research indicates that adult obesity treatment has relatively poor long-term effects. Consequently increased attention has been given to addressing obesity in children. This focus is particularly vital due to the fact that children are one of the populations showing the most rapid increase in overweight and obesity. The purpose of this study was to identify the some of the unique psychological characteristics of obese children by analyzing the intake data of children and adolescents attending the Loma Linda University Growing Fit …


Radiation Effects On Dopamine-Mediated Prepulse Inhibition In The C57bl/6 Mouse, Cara Nicole Zuccarelli Miller Sep 2003

Radiation Effects On Dopamine-Mediated Prepulse Inhibition In The C57bl/6 Mouse, Cara Nicole Zuccarelli Miller

Loma Linda University Electronic Theses, Dissertations & Projects

This study examined the effects of proton and gamma radiation on a dopamine-dependent sensory gating mechanism: prepulse inhibition of the startle reflex. The purpose of this research was to describe potential hazards of proton radiation to the central nervous system in long-term space fight and for proton therapy patients. Results from previous research indicate that startle behavior is modified by proton and iron radiation. Forty-eight 10-½ week old, male C57BL/6 mice were used to characterize the optimal parameters for the model (prepulse duration, probe duration, and stimulus-onset-asynchrony). Three hundred and fifty two mice were used to characterize the time course …


Trying To Fix The Development In Evolutionary Developmental Psychology, David S. Moore Jul 2003

Trying To Fix The Development In Evolutionary Developmental Psychology, David S. Moore

Pitzer Faculty Publications and Research

If we agree for a moment that there is such a thing as human nature, we immediately encounter an extraordinarily thorny question: Where does our nature come from? This question drives David Bjorklund and Anthony Pellegrini’s new book The Origins of Human Nature: Evolutionary Developmental Psychology. The question is so challenging, in part, because human nature reflects at least two conceptually distinct processes: evolution and development. The former, which operates across generations, allows the continued existence of characteristics that permitted survival and reproduction in our ancestors; the latter, which operates during a person’s lifetime, contributes to the appearance of …


Habitat-Predator Association And Avoidance In Rainbowfish (Melanotaenia Spp.), Culum Brown Jun 2003

Habitat-Predator Association And Avoidance In Rainbowfish (Melanotaenia Spp.), Culum Brown

Sentience Collection

The ability to recall the location of a predator and later avoid it was tested in nine populations of rainbowfish (Melanotaenia spp.), representing three species from a variety of environments. Following the introduction of a model predator into a particular microhabitat, the model was removed, the arena rotated and the distribution of the fish recorded again. In this manner it could be determined what cues the fish relied on in order to recall the previous location of the predator model. Fish from all populations but one (Dirran Creek) were capable of avoiding the predator by remembering either the location and/or …


Considering Animals—Not “Higher” Primates, Marc Bekoff Jun 2003

Considering Animals—Not “Higher” Primates, Marc Bekoff

Sentience Collection

In this essay I argue that many nonhuman animal beings are conscious and have some sense of self. Rather than ask whether they are conscious, I adopt an evolutionary perspective and ask why consciousness and a sense of self evolved—what are they good for? Comparative studies of animal cognition, ethological investigations that explore what it is like to be a certain animal, are useful for answering this question. Charles Darwin argued that the differences in cognitive abilities and emotions among animals are differences in degree rather than differences in kind, and his view cautions against the unyielding claim that humans, …


A Research Agenda For Political Personality And Leadership Studies: An Evolutionary Proposal, Aubrey Immelman, Theodore Millon Jun 2003

A Research Agenda For Political Personality And Leadership Studies: An Evolutionary Proposal, Aubrey Immelman, Theodore Millon

Psychology Faculty Publications

Despite major neuroscientific advances in the past two decades and parallel conceptual refinement in evolutionary theory, personality-in-politics inquiry remains adrift, divorced from these broader spheres of scientific knowledge. This paper reviews the neurobiological substrates of three major domains of evolutionary biology and behavioral ecology relevant to political personality assessment and the psychological examination of political leaders; furnishes a context and set of guiding ideas to revitalize the study of the person as biopsychosocial entity in politics; advances a generative theory of personality and political leadership performance; and proposes an agenda for advancing personality-in-politics and leadership inquiry, informed by insights derived …


A Simple Reason For A Big Difference: Wolves Do Not Look Back At Humans, But Dogs Do, Ádám Miklósi, Eniko Kubinyi, József Topál, Márta Gácsi, Zsófia Virányi, Vilmos Csányi Apr 2003

A Simple Reason For A Big Difference: Wolves Do Not Look Back At Humans, But Dogs Do, Ádám Miklósi, Eniko Kubinyi, József Topál, Márta Gácsi, Zsófia Virányi, Vilmos Csányi

Communication Skills Collection

The present investigations were undertaken to compare interspecific communicative abilities of dogs and wolves, which were socialized to humans at comparable levels. The first study demonstrated that socialized wolves were able to locate the place of hidden food indicated by the touching and, to some extent, pointing cues provided by the familiar human experimenter, but their performance remained inferior to that of dogs. In the second study, we have found that, after undergoing training to solve a simple manipulation task, dogs that are faced with an insoluble version of the same problem look/gaze at the human, while socialized wolves do …


The Bold And The Shy: Individual Differences In Rainbow Trout, L. U. Sneddon Apr 2003

The Bold And The Shy: Individual Differences In Rainbow Trout, L. U. Sneddon

Aquaculture Collection

Boldness and shyness were investigated as ‘personality’ traits in hatchery-reared rainbow trout Oncorhynchus mykiss. Bold fish spent more time in an open area and were more active than shy fish and these behaviours could be used as indicators of boldness and shyness. These differences were related to learning ability in a simple conditioning task. Bold fish learned the task more quickly than shy fish.


The Development Of A Physical Education Teachers' Physical Activity Self-Efficacy Instrument, Jeffrey J. Martin, Pamela Hodges Kulinna Apr 2003

The Development Of A Physical Education Teachers' Physical Activity Self-Efficacy Instrument, Jeffrey J. Martin, Pamela Hodges Kulinna

Kinesiology, Health and Sport Studies

In the present investigation a questionnaire was developed to assess physical education teachers' self-efficacy for teaching classes in which their students were engaged in high levels of physical activity (i.e., at least 50% of class time). Exploratory and confirmatory factor analyses resulted in the development of a 16-item, 4-factor, multidimensional physical education teachers' physical activity self-efficacy scale (PETPAS) that produced reliable and valid scores. The Student factor reflected teachers' efficacy for managing students who didn't enjoy or value physical activity. The Time factor was indicative of teachers' efficacy when they didn't have enough time to teach. The Space factor reflected …


Play And The Evolution Of Fairness: A Game Theory Model, Lee Alan Dugatkin, Marc Bekoff Jan 2003

Play And The Evolution Of Fairness: A Game Theory Model, Lee Alan Dugatkin, Marc Bekoff

Ethology Collection

Bekoff [J. Consci. Stud. 8 (2001) 81] argued that mammalian social play is a useful behavioral phenotype on which to concentrate in order to learn more about the evolution of fairness. Here, we build a game theoretical model designed to formalize some of the ideas laid out by Bekoff, and to examine whether ‘fair’ strategies can in fact be evolutionarily stable. The models we present examine fairness at two different developmental stages during an individual’s ontogeny, and hence we create four strategies--fair at time 1/fair at time 2, not fair at time 1/not fair at time 2, fair at time …


Trends. Security, Stigma, And Biological Weapons, Ibpp Editor Jan 2003

Trends. Security, Stigma, And Biological Weapons, Ibpp Editor

International Bulletin of Political Psychology

This Trends article discusses the political psychology of security concerns pertaining to unclassified information relating to biological weapons and/or biosecurity and how it might be used to harm US security.


Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell Jan 2003

Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell Jan 2003

Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Gamma Oscillations Correlate With Working Memory Load In Humans, Marc W. Howard, Daniel S. Rizzuto, Jeremy B. Caplan, Joseph R. Madsen, John Lisman Jan 2003

Gamma Oscillations Correlate With Working Memory Load In Humans, Marc W. Howard, Daniel S. Rizzuto, Jeremy B. Caplan, Joseph R. Madsen, John Lisman

Psychology - All Scholarship

Functional imaging of human cortex implicates a diverse network of brain regions supporting working memory—the capacity to hold and manipulate information for short periods of time. Although we are beginning to map out the brain networks supporting working memory, little is known about its physiological basis. We analyzed intracranial recordings from two epileptic patients as they performed a working memory task. Spectral analyses revealed that, in both patients, gamma (30-60 Hz) oscillations increased approximately linearly with memory load, tracking closely with memory load over the course of the trial. This constitutes the first evidence that gamma oscillations, widely implicated in …


Trends. Terrorist Brains, Ibpp Editor Nov 2002

Trends. Terrorist Brains, Ibpp Editor

International Bulletin of Political Psychology

This Trends article discusses the construct of biological reductionism in the context of the case of Red Army Faction member Ulrike Meinhof. For the author, overly emphasizing the biological aspects of Ms. Meinhof’s case might obscure legitimate grievances, and ultimately, lead to more cases of violence associated with terrorism.


Training And Performance Self-Efficacy, Affect, And Performance In Wheelchair Road Racers, Jeffrey J. Martin Oct 2002

Training And Performance Self-Efficacy, Affect, And Performance In Wheelchair Road Racers, Jeffrey J. Martin

Kinesiology, Health and Sport Studies

In the current study, social cognitive theory was examined with athletes with disabilities. More specifically, hierarchical and self-regulatory performance self-efficacy, self-regulatory training self-efficacy, outcome confidence, and affect were examined with wheelchair road racers (N = 51). In accordance with social cognitive theory, moderate to strong significant relationships among 3 types of self-efficacy and outcome confidence were found (rs = .41 - .78). All forms of self-efficacy and positive affect (rs = .39 - .56) were also related providing additional support to social cognitive theory and the important relationships among training and performance related efficacy and affect in …


Do Female Rainbowfish (Melanotaenia Spp.) Prefer To Shoal With Familiar Individuals Under Predation Pressure?, Culum Brown Sep 2002

Do Female Rainbowfish (Melanotaenia Spp.) Prefer To Shoal With Familiar Individuals Under Predation Pressure?, Culum Brown

Sentience Collection

Shoaling with familiar individuals may have many benefits including enhanced escape responses or increased foraging efficiency. This study describes the results of two complimentary experiments. The first utilised a simple binary choice experiment to determine if rainbowfish (Melanotaenia spp.) preferred to shoal with familiar individuals or with strangers. The second experiment used a “free range” situation where familiar and unfamiliar individuals were free to intermingle and were then exposed to a predator threat. Like many other small species of fish, rainbowfish were capable of identifying and distinguishing between individuals and choose to preferentially associate with familiar individuals as opposed to …


Social Learning Of A Novel Avoidance Task In The Guppy: Conformity And Social Release, Culum Brown, Kevin N. Laland Jul 2002

Social Learning Of A Novel Avoidance Task In The Guppy: Conformity And Social Release, Culum Brown, Kevin N. Laland

Sentience Collection

Studies of social learning suggest that many animals are disproportionately likely to adopt the behavior of the majority, and that this conformist transmission hinders the spread of novel behavioural variants. However, novel learned behaviour patterns regularly diffuse through animal populations. We propose a hypothesis, termed the ‘social release hypothesis’, that resolves these apparently conflicting findings by suggesting that animals are released from conforming to traditional behaviour in the absence of demonstrators. We investigated the role of pretrained, female demonstrator guppies, Poecilia reticulata, in influencing the escape response of untrained females to an artificial predator. Naïve ‘observer’ guppies were given the …