Mousekilling,intermale fighting,and conditioned emotional response in rats

Several possible relationships between two forms of aggression in rats were studied. First, mouse killing and spontaneous intermale fighting were found to be correlated. Rats which attacked other rats were those most likely to kill mice. To determine whether aggressive and nonaggressive rats were also differentially responsive to other situations involving emotional arousal, but not aggression, mouse-killers and nonkillers were compared in a conditioned emotional response (CER) situation. Mouse-killers showed greater suppression to the conditioned stimulus (CS) and to the situational cues of the apparatus. Therefore, a common arousal mechanism may underlie a number of diverse agonistic responses. Nevertheless, extensive mouse-killing experience did not increase the tendency of rats to fight with either adult males or juvenile males.     

Bombesin improves rats' operant responding maintained by a differential-reinforcement-of-low-rates schedule of food reinforcement

The present study examined rats' responding on a differential-reinforcement-of-low-rates schedule of food reinforcement following intraperitoneal injections of various doses of bombesin (4, 6, 8, 16, 32 micrograms/kg). Analyses indicated that only the 6 micrograms/kg dosage improved DRL responding. The findings are consistent with prior research examining bombesin's effect on operant behavior and support the notion that bombesin induces satiety rather than malaise.     

Autobiographical memory: influence of right hemisphere damage on emotionality and specificity

This study investigated the ability of right hemisphere damaged (RHD) patients to recall autobiographical material in response to emotional versus nonemotional cues. A modified Crovitz paradigm was used in which patients were asked to recall a specific episode from their own life that related to a cue word. These episodes were rated for emotionality and specificity by independent raters. Patients also rated the emotionality of their own episodes. Independent raters judged the reports of the RHD patients as less specific and less emotional than those of matched nonneurologic control subjects. This was true for episodes in response to emotional as well as nonemotional cue words. RHD patients' own ratings of these episodes, however, did not differ from those of controls. These findings are discussed in terms of RHD patients' overall difficulties in processing emotional material and in terms of the nature of autobiographical memory.     

Influence of consultation on ethical decision making: an analogue study

Participants (62 students from 6 doctoral programs in professional psychology) were given 3 ethical dilemmas, asked to generate their own solutions, and asked to make judgments about a number of provided alternatives. Students were asked either to make decisions after seeking consultation or to make decisions independently of consultation. There were few significant between-group differences along a number of dimensions including participants' ratings of acceptability of provided alternatives and levels of certainty, justification, and satisfaction with personally generated solutions. For one of the vignettes, individuals using consultation, when compared with the control group, were significantly more likely to prefer their own solution to that of provided alternatives. The study was viewed as a needed first step in investigating a cherished assumption in clinical practice.     

Tovrard a Multidimensional View of Personality and Health

Health status has in effect become an external criterion for various personality traits. It seems unlikely, however, that a unidimensional approach to personality actually will be productive, even when something as concrete as physical health serves as a criterion variable. Instead, the benefits of a more multidimensional, contextualized approach to the prediction of health status are emphasized. Additional comments concern the distinction between cooccurence and correlation of two variables, some ambiguities regarding the appropriate criterion variables for health psychology, and some logistical issues in the domain of personality and health psychology.     

EEG “maturational lag” profiles: Follow-up analyses

Nineteen children who had EEG diffuse slow frequency profiles suggesting a maturational lag were retested 1 to 2 years later receiving both EEG and psychometric assessments. They were compared to 18 children who also had been tested previously but did not have the slow frequency profile. Children with the maturational lag profile displayed varying degrees of EEG developmental change upon retest;i.e., some showed the expected developmental change while others remained the same. Within this group, there were significant relationships between the degree of EEG change and psychometric scores. Those that demonstrated the most EEG change had higher psychometric indices, and these relationships were not obtained in the comparison group. These findings suggest developmental heterogeneity with respect to brian maturation as measured by the EEG and also suggest that test-retest EEG data can clarify a maturational lag diagnosis.This work was supported by grants awarded to W. C Corning by the Natural Science and Engineering Research Council. The authors wish to acknowledge the assistance and support of J. Washburn, M. Staines, A. Goebel, Lyle MacDonald, and the staff of the psychology department, University of Waterloo.     

Processing of faces by patients with unilateral hemisphere lesions. I. Dissociation between judgments of facial affect and facial identity

In this study, right-hemisphere-damaged (RHD) subjects performed significantly worse than LHD and NHD controls across a series of seven facial identity and facial affect tasks. Even when the patient groups were statistically equated on a measure of visuoperceptual ability, the RHD group remained impaired on three emotional tasks--naming, picking, and discriminating emotional faces. These findings suggest that the defects shown by RHD patients on facial affect tasks cannot be solely attributed to defects in visuoperceptual processing and that the right-hemisphere superiority for processing facial affect exists above and beyond its superiority for processing facial identity.