Perioral somatosensory determinants of nursing behavior in Norway rats (Rattus norvegicus)

Prior to assuming the upright crouching posture over their pups during nursing bouts, lactating rats typically engage in several oral behaviors, including nuzzling, licking and rearranging pups. By acutely depriving dams of various aspects of perioral stimulation from pups (with anesthesia of the mystacial pads or of the tongue, with mouth suturing, or with muzzling), we found the following: (1) Distal stimulation from pups maintains proximity-seeking behavior, but is insufficient to stimulate nursing behavior. (2) Lack of tongue feedback decreases pup licking and hastens the onset of crouching. (3) Snout, but not tongue, contact with pups is required for hovering over them. (4) The position of the dam while hovering over her litter enables the pups to gain access to her ventrum, thereby provoking her upright, crouching posture. (5) Older pups are capable of bypassing the dam's perioral attentions and stimulating crouching directly by burrowing under the dam's ventrum.     

Relationship of racial stressors to blood pressure responses and anger expression in black college students

The physiological effects of racism, as a stressor, were examined as they related to blood pressure (BP) and anger experiences in Black college students. Current research has failed to consider the stressful effects of racism as a factor contributing to the higher incidence of essential hypertension among Blacks. Twenty-seven Black college students viewed three excerpts showing racist situations involving Blacks; anger-provoking, nonracist situations; and neutral situations. After each scene, BP was taken, and a mood checklist was administered. The Framingham Anger Scale and the Anger Expression Scale were administered. Analyses revealed that BP significantly increased during the presentation of racist stimuli but not of anger-provoking or neutral stimuli. Self-reports of state anger, as measured by the mood checklist, were significant for both the anger-provoking and racist stimuli. BP scores were significantly correlated to the two trait anger measures. Exposure to racist stimuli was associated with BP increases among Blacks. Such cumulative exposure to racism may have important implications for the etiology of essential hypertension.     

Marital adjustment among rural couples: The role of expressiveness

This study examined the relationship between marital adjustment and husbands' and wives' instrumentalness and expressiveness. Eighty-five rural couples completed the Spanier Dyadic Adjustment Scale and the Personal Attributes Questionnaire. Multiple regression analyses indicated that husbands' expressiveness was the sole predictor of both husbands' and wives' marital adjustment. Results are compared to previous research findings with urban couples. Implications of the findings for gender-related patterns of socialization are also discussed.     

The written summary in group psychotherapy revisited

This paper addresses the use of the weekly written summary with patients in group psychotherapy. In an effort to stimulate group process and effect cotherapist communication, the authors instituted this group recording in an ongoing psychodynamically oriented mixed adult group. While the utilization of this device did, in fact, stimulate the group process and became an important part of the group's life, the therapists additionally saw significant effects upon their working alliance. These included increased focused dialogue upon group dynamics, more purposeful planning for group interventions, and heightened awareness of the significance of interventions in the group.Ms. Bosman-Clark is formerly Clinical Instructor, Department of Psychiatry, Baylor College of Medicine.     

The impact of drug screening on selection decisions

This paper discusses the use of drug screening for employee selection decisions. Common methods of drug screening are described, and a recent study of drug screening accuracy is summarized. It is argued that drug screening is subject to the same standards as are other selection procedures, and that human resource professionals must assume responsibility for understanding the potential problems associated with drug screening. Issues relevant to determining the benefits of drug screening are discussed, and an illustration of the impact of drug screening on decision accuracy is presented. It is suggested that, in many instances, the value of drug screening in the selection process may be low enough to warrant serious concern. Implications for human resource research and practice are noted.An earlier version of this paper was presented at the 95th Annual Convention of the American Psychological Association in New York; August 31, 1987. The authors would like to thank Michael Bramel for his assistance in locating and summarizing some of the medical literature cited, and two anonymous reviewers for their helpful comments.     

Perceptual speed in adulthood: cross-sectional and longitudinal studies

Cross-sectional data on age differences in perceptual speed are presented from the Seattle Longitudinal Study for the age range 22-91 years (N = 1,620, first assessed in 1977; N = 628, first assessed in 1984). In addition, 838 subjects were followed over the 7-year interval. Markers of perceptual speed were the Identical Pictures and Finding A's tests from the ETS Kit of Factor-Referenced Tests. Significant age differences, age changes, and cohort differences were found at both observed variable and latent construct levels. Cross-lagged correlations examine the role of perceptual speed in predicting later performance on other abilities (Verbal Meaning, Inductive Reasoning, Spatial Orientation, Number, and Word Fluency). When perceptual speed is partialled out of scores for these abilities, aging effects are reduced markedly for all abilities, but least for Spatial Orientation and Inductive Reasoning.     

Time of day and the representation of text

This article reports an experiment to investigate the idea that time-of-day differences in memory for text are related to type of text processing that is carried out at different times of day. In particular, it was hypothesized that subjects tested in the morning tend to retain more of the exact wording of the text, whereas those tested in the afternoon are more likely to produce a meaning-based representation. The results of a recognition test showed that, in agreement with other studies, immediate text memory is better in the morning than in the afternoon. As predicted, the subjects tested in the morning better remembered the exact wording of the original passages. However, the idea that memory for meaning is better in the afternoon than the morning was not supported by the data. The results suggest that subjects at both times of day produce a meaning-based representation of the text but, in the morning, this representation is supported by good verbatim memory, enabling accurate recall of the text at that time.