Social and Behavioral Sciences Commons^™

Effects Of Nicotine And Anatoxin-A Exposures On The Operant Performance Of Rats, Kimberly Ann Jarema

Dissertations

Tolerance has previously been shown to develop to nicotine's effects on operant behavior. This experiment explored whether tolerance would still develop when nicotine administrations were separated by three weeks. Anatoxin-a, a nicotinic-receptor agonist, was also tested and the results were compared to nicotine. Male Long Evans rats performed under a multiple VR30 VI30-sec food-reinforcement schedule. Phase I rats were divided into 6 groups of 8 that received four weekly subcutaneous injections of nicotine (0.0-1.8 mg/kg) and anatoxin-a (0-250 mcg/kg) prior to testing sessions. An ED50 was derived, for each compound, from the VR dose-response curve. Phase II rats were divided …

A Comparison Of Kinetic Family Drawings Of Firstborn And Second-Born Siblings, Lynn Anderson

Dissertations

Problem. While the Kinetic Family Drawing (KFD) is a popular assessment tool for clinicians, research on developmental issues and how siblings draw their families is lacking. The purpose of this study was to (a) describe the way siblings perceive themselves and their family interpersonal relationships as expressed in the KFD; and (b) to describe possible developmental age differences in the KFD.

Method. The KFD and a Family Dynamics Interview Schedule were administered to 50 pairs of first- and second-born children from Southwestern Michigan, ages 5-14. The data were analyzed quantitatively by the Wilcoxon Sign Test and Chi-Square, using …