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Psychiatry and Psychology

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Articles 151 - 160 of 160

Full-Text Articles in Biological Psychology

Nonlinear Dynamics Of Infant Sitting Postural Control, Joan E. Deffeyes Jan 2009

Nonlinear Dynamics Of Infant Sitting Postural Control, Joan E. Deffeyes

Department of Psychology: Dissertations, Theses, and Student Research

Sitting is one of the first developmental milestones that an infant achieves. Thus measurements of sitting posture present an opportunity to assess sensorimotor development at a young age, in order to identify infants who might benefit from therapeutic intervention, and to monitor the efficacy of the intervention. Sitting postural sway data was collected using a force plate from infants with typical development, and from infants with delayed development, where the delay in development was due to cerebral palsy in most of the infants in the study. The center of pressure time series from the infant sitting was subjected to a …

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A Study Of Possible Pre-Cognitive Advantages Of Bilingualism, Marisela Gutierrez Jan 2009

A Study Of Possible Pre-Cognitive Advantages Of Bilingualism, Marisela Gutierrez

Open Access Theses & Dissertations

Past research has suggested that second language acquisition has a beneficial effect on the development of inhibitory control processes in children and adults. This has been referred to as the "bilingual advantage" and is most commonly quantified using the Simon task. Whether the bilingual advantage extends to precognitive mechanisms has not yet been examined. The goals of this study were to examine the bilingual advantage in university students; and to examine whether the bilingual advantage extends to the precognitive filtering mechanism of sensorimotor gating. It was predicted that, as compared to monolinguals, bilingual university students would have greater inhibitory control, …

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Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral Jan 2009

Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral

Open Access Theses & Dissertations

The effect of stimulus type on task-irrelevant evaluative categorization was examined in two separate studies by using the P3 component from event-related brain potentials. The first study presented idiosyncratic stimuli consisting of individuals that were rated by participants as either positive or negative within sequences of pictorial and verbal stimuli. The second study presented sequences of novel and familiar stimuli consisting of previously normed unattractive and neutral individuals. It was hypothesized that pictures would elicit task-irrelevant evaluative categorization processes and so would novel stimuli (relative to words and familiar stimuli, respectively). Task-irrelevance was examined by assessing P3 peak amplitude to …

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Psychological Distress And Change In A Pediatric Obesity Population, Amy Rebecca Beck Dec 2008

Psychological Distress And Change In A Pediatric Obesity Population, Amy Rebecca Beck

Loma Linda University Electronic Theses, Dissertations & Projects

Pediatric overweight and obesity is a growing national epidemic with 15 percent of children ages 6-19 considered obese and at least 22 percent considered overweight. While there is considerable research pointing to contributing factors of obesity, there is a paucity of research which elucidates what contributes to successful intervention. Considering that by the year 2050, nearly 50 million Americans may be obese, understanding the factors delineating success of weight loss and prevention is a necessity. The purpose of this study was to utilize archival data from the LLU Growing Fit Program to evaluate the levels of psychological distress experienced by …

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The Influence Of College Students’ Perception Of Parental (Or Primary Caregiver) Expectations On Coping Behavior And Adjustment In Early Adulthood, Jessica Smith Jan 2007

The Influence Of College Students’ Perception Of Parental (Or Primary Caregiver) Expectations On Coping Behavior And Adjustment In Early Adulthood, Jessica Smith

Theses, Dissertations and Capstones

While some research has examined how parental expectations affect educational achievement, there is very little known about how parental expectations affect the development of coping skills and adaptive and maladaptive psychosocial functions. Participants were asked to complete a measure of their abilities in academics, sports, leadership, honesty, responsibilities, among other things. Then, they completed a measure of what they perceived their parents’ expectations of those areas were. Lastly, they completed the Behavioral Assessment System for Children-College Self Report of Personality form as a measure of adaptive and maladaptive functioning. The goals of this study are to investigate 1) if participants' …

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Predictors Of Middle School Girls' Engagement In Suspendable School Offenses., Barbara Harlow Cavanaugh Jan 2007

Predictors Of Middle School Girls' Engagement In Suspendable School Offenses., Barbara Harlow Cavanaugh

Walden Dissertations and Doctoral Studies

Despite research evidence that social context and personal characteristics are related to girls' violent behavior, little is known about the relative contribution of such antecedents. Therefore, the purpose of this study was to assess the relative strength of predictors of school violence among a sample of middle school girls. Of special interest were the intervening variables, because knowledge of their relative strength could enable schools to design targeted interventions to reduce school violence. Social learning theory formed the theoretical foundation for the study. A four-part survey consisting of sociodemographic items, the Rosenberg Self-Esteem Scale, an amended version of the Attitudes …

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Biological Psychiatry: A Practice In Search Of A Science, W. Joseph Wyatt, Donna M. Midkiff Oct 2006

Biological Psychiatry: A Practice In Search Of A Science, W. Joseph Wyatt, Donna M. Midkiff

Psychology Faculty Research

The rise of the biological causation model in the past thirty years is traced to psychiatry’s efforts to regain lost status and to protect itself from intrusions by non-medical practitioners, as well as to the pharmaceutical industry’s drive for profits. Evidence in support of the model, including studies of identical twins and of brain structure and function, are less revealing than was earlier thought, due to problems in methodology and interpretation. Organized psychiatry, when challenged in 2003, was unable to provide compelling evidence for biological causation of most mental and behavioral disorders. A paradigm shift away from biological causation and …

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Six-To-One Gets The Job Done: Comments On The Reviews, W. Joseph Wyatt, Donna M. Midkiff Oct 2006

Six-To-One Gets The Job Done: Comments On The Reviews, W. Joseph Wyatt, Donna M. Midkiff

Psychology Faculty Research

We are pleased to note that six of the seven responses to our article were marked by approval, and/or thoughtful contemplation, regarding our central theses—that the research said to support biological causation of mental disorders is relatively weak, and that the claims of drug effectiveness are often overstated.

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The Effect Of Pre-Exposure To Sucrose On The Acquisition And Extinction Of A Conditioned Aversion, Shirlee Fenwick Apr 1974

The Effect Of Pre-Exposure To Sucrose On The Acquisition And Extinction Of A Conditioned Aversion, Shirlee Fenwick

Psychology Theses & Dissertations

Twenty-eight female, water deprived rats were given 5 minutes access to sucrose for either 1,7,14, or 21 days. They were then given LiC1 injections every third day until an aversion to the sucrose developed. The results indicated that as amount of pre-exposure to sucrose increased, the number of illnesses required to develop an aversion increased. Also, the rate of extinction of the conditioned aversion was inversely related to the number of exposures required. to establish the aversion.

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The Effects Of Cs Habituation And Duration Of The Directional Modification Of The Cardiac Response In The Guinea Pig (Cavia Procellus), Ray Charles Larson May 1971

The Effects Of Cs Habituation And Duration Of The Directional Modification Of The Cardiac Response In The Guinea Pig (Cavia Procellus), Ray Charles Larson

All Master's Theses

The present experiment examined the effects of CS habituation and two different levels of CS duration (60 versus 6 sec) on the directional modification of the conditioned cardiac response in the guinea pig. The results indicated that the only reaction to the CS, regardless of prior habituation or CS duration, was a decelerative conditioned HR response. However, habituation to a CS prior to classical aversive conditioning was found to attenuate the magnitude of the bradycardia CR that developed. The bradycardia CR was discussed in terms of being a cardiac component of the orienting response.

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