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Learned Fear And Reaction To Novel Stimuli: Behavioral And Hormonal Stress Responses In The Maternal Rat, Brandi Nicole Rima Aug 2006

Learned Fear And Reaction To Novel Stimuli: Behavioral And Hormonal Stress Responses In The Maternal Rat, Brandi Nicole Rima

Master's Theses

The present thesis examines the relationship between reproductive experience and the behavioral, neural, and hormonal processes of learned fear in the female rat. Multiple research models indicate that reproductive experience functions to decrease the female's stress response in potentially harmful environments, thus providing her with numerous survival benefits, including decreased fearfulness, increased aggression, and refined hunting skills. Based on existing understandings of maternal experience and unconditioned fear, this study was designed to determine how nulliparous (no reproductive experience, NP), primiparous (one reproductive experience, PP) and multiparous (more than one reproductive experience, MP) rats comparatively respond to a Pavlovian paradigm ...


A Role For Vasopressin And Oxytocin In Parental Behavior Of The Male Sprague-Dawley Rat, Ekaterina V. Karelina Aug 2006

A Role For Vasopressin And Oxytocin In Parental Behavior Of The Male Sprague-Dawley Rat, Ekaterina V. Karelina

Master's Theses

Paternal behavior, though infrequent in many mammalian species, can be induced under laboratory conditions through manipulation of either hormonal or environmental states. Rodent studies of parental behavior have implicated similarities for males and females in not only the actual behavioral repertoire, but also the brain mechanisms governing the set of behaviors in both sexes. The current project investigated changes in oxytocin and vasopressin in the hypothalamus of paternal male rats. We found that paternal behavior, which was readily induced through sensitization (chronic pup exposure), was significantly correlated with increasing oxytocin and vasopressin immunoreactivity within the paraventricular nucleus. Further, corticosterone levels ...


Conditional Love : A Study Of Situational Differences In Rooting For An Underdog, Sheila Margaret Hindle May 2006

Conditional Love : A Study Of Situational Differences In Rooting For An Underdog, Sheila Margaret Hindle

Master's Theses

While people tend to root unabashedly for underdogs in the domain of athletics, underdogs do not generally receive the same tremendous support in matters of business. This may occur for a variety of reasons, but of particular interest is the fact that an individual's perception of a situation as both self-relevant and of high consequences may prove detrimental to his or her willingness to support an underdog. Two studies were conducted to explore these hypotheses. Study 1 (N=48) required participants to read a brief scenario depicting a situation of varied self-relevance and consequences, and then select a company ...


Predictors Of Breast And Cervical Cancer Screening Among Vietnamese Immigrant Women, Anh B. Nguyen May 2006

Predictors Of Breast And Cervical Cancer Screening Among Vietnamese Immigrant Women, Anh B. Nguyen

Master's Theses

Predictors of breast and cervical cancer screening among Vietnamese immigrant women. Anh B. Nguyen, Master of Arts in Psychology, University of Richmond, 2006. Thesis director: Barbara K. Sholley, Ph.D Although practicing preventative healthcare is an important part of a healthy lifestyle, some high-risk populations do not engage in preventative screenings for cancer. Vietnamese American women constitute a high-risk group in gynecological cancers, and it was hypothesized that tenure, acculturation, health insurance, a regular source of care, education, employment status, and marital status would affect rates of cancer screening. It was also hypothesized that the Vietnamese population would have different ...