A comparison of alcohol drinkers at a state and private university

The purpose of this study was to compare the drinking behaviors of college students at a large state university to the drinking behaviors of their counterparts at a smaller church university.Questionnaires were administered to a total sample of 764—434 students represented the state university, while 330 students represented the church university. Statistical analysis of the data revealed significant differences at the .05 alpha level between the two groups of drinkers. However, many similarities between the two groups did exist. Two of the three null hypotheses were supported by the data. Only in one category did the drinkers at the church school respond notably higher than the state school drinkers. Considerably more church school drinkers admitted to drinking primarily when in a lonely or sad mood than the state school drinkers. Drinkers at the church school felt a need to hide or be alone when drinking and did not use alcohol to socialize as often as their state school counterparts.     

Damage to the hippocampal formation in rats selectively impairs the ability to learn cue relationships

We assessed the contribution of the hippocampal formation to performance in tasks that require rats to respond to a relationship between discriminative stimuli. The first experiment employed a nonmatching-to-sample procedure in a Y-maze. Three pairs of boxes were used which differed in brightness of the walls and in the odors that they contained. The rats were trained prior to receiving kainic acid and colchicine-induced damage to the hippocampal formation or electrolytic damage to the amygdala. After surgery all rats performed the nonmatching-to-sample task accurately if both brightness and odor cues were present in the sample and choice boxes or if the boxes contained either visual cues alone or odor cues alone. If the available cue modality was different in sample and choice boxes, then the amygdala-damaged, but not the hippocampal-damaged, rats performed accurately. In the second experiment control rats or rats with hippocampal formation damage were trained postoperatively in a conditional black/white discrimination task in a Y-maze. Only the control group successfully learned to select the white arm if the start box was illuminated and the black arm if the start box was dark. Subsequently, both groups learned a simple black/white discrimination. The same rats were tested in the hidden platform version of the Morris water task and only the control group learned to swim accurately to the goal. Both groups learned to swim accurately to a visible black platform. The results are consistent with the notion that the hippocampal formation is essential to learning that involves control exerted by a configural relationship among cues, independently of the spatial or conditional requirements of tasks.     

Self-perpetuating development of encoding biases

The process of encoding new information involves the imposition of preexisting interpretive categories on newly encountered stimuli, even if the categories do not match perfectly those stimuli. We hypothesized that such encoding of stimuli as supportive of preexisting encoding dispositions may become a source of a perceiver's subjective experiences that support these dispositions. Through this nonconsciously operating mechanism, encoding rules may gradually develop in a self-perpetuating manner, even in the absence of any objectively supportive evidence. Results demonstrated this self-perpetuating process in three studies involving different stimulus materials and experimental tasks (matrix-scanning paradigm and two "intuitive judgment" tasks). The self-perpetuating development of encoding biases is discussed as one of the elementary mechanisms involved in the development of interpretive categories and other individually differentiated cognitive dispositions.     

Divorce,single parenthood and stepfamilies: Structural implications of these transactions

This article focuses on change in the family structure during the divorce as well as in the sequential stages of single parenthood and the reconstituted family. Special characteristics of these families and the tasks to be undertaken to enable the new unit to function are discussed conceptually and through case illustrations. Family therapy is seen as particularly helpful during the crisis stage when either a parent leaves or a new unit is added to an established one. The necessity of being aware of and working with all parts of the system, both the split-off and the newly-added, is stressed.     

Development of the Mental Health Locus of Control and Mental Health Locus of Origin Scales

The Mental Health Locus of Control (MHLC) Scale is an area-specific measure of locus of control expectancies designed to predict mental health related behaviors, particularly those occurring in treatment situations. The discriminant validity of the MHLC, in contrast with Rotter's 1-E measure of generalized expectancies, was demonstrated with two mental health related variables: beliefs concerning etiology of psychopathology, and information about abnormal psychology. Beliefs about etiology were measured by the Mental Health Locus of Origin (MHLO) Scale. The primary hypothesis, that individuals with 'endogenous' beliefs about etiology tend to have 'external' expectations for the client's role in treatment, was supported by a statistically significant (p < .001) correlation between the MHLC and MHLO Scales.     

Speed constancy as a function of size constancy

If perceived velocity were to be a function of phenomenal extent traversed per unit time, speed constancy would be derivable from size constancy. Experiments were performed to test this possibility in which visible frames of reference were eliminated. With cues to distance, judgments ofspeed approached constancy; without such cues, judgments of speed were in terms of rate ofimage displacement.