Book reviews

Campbell, B. A., Hayne, H., & Richardson, R. (Eds.) (1992). Attention and information processing in infants and adults. Perspectives from human and animal research. Hove: Lawrence Erlbaum Associates. Pp. viii + 360. ISBN 0-8058-0782-9. £54.95 (Hbk).

McFarland, D. (1993). Animal behaviour: Psychobiology, ethology and evolution (2nd ed.). Harlow: Longrnan Scientific and Technical. Pp. xiv + 585. ISBN 0-582-06721-9. £23.99 (Pbk).

Ward, J. P., & Hopkins, W.D. (Eds.) (1993). Primate laterality: Current behavioral evidence of primate asymmetries. New York/Berlin: Springer-Verlag. Pp. xii + 356. ISBN 0-387-97961-1 13-540-97961-1. £34.50 (Pbk).

Zentall, T. R. (Ed.). (1993). Animal cognition. A tribute to Donafd A. Riley. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc. Pp. xiv + 369. ISBN 0-8058-1 184-2. £22.95 (Pbk); ISBN 0-8058-1 183-4. £53.50 (Hbk).

Roitblatt, H. L., Herman, L. M., & Nachtigall, P.E. (Eds.) (1993). Language and communication. Comparative perspectives. Hillsdale, NJ : Lawrence Erlbaum Associates, Inc. Pp. xvi + 502. ISBN 0-8058-0947-3. £26.95 (Pbk); ISBN 0-8058-0946-5. £59.95 (Hbk).

Bradshaw, J. L, & Rogers, L.J. (1993). The evolution of lateral asymmetries, language, roo1 use, and intellect. San Diego, CA: Academic Press. Pp. xiii + 463. ISBN 0-12-124560-8. £58.00 (Hbk).

Ten Cate, C., Slater, P. J. B., & Kruijt, J. P. (Eds.) (1993). Song learning and imprinting. An inquiry into mechanisms of behavioural development. Amsterdam: Netherlands Zoology Society. Pp. 234. £13.00 (Pbk).     

Gravity does rule for falling events

Hood (1995) reported a vertical invisible displacement task where the goal was to find a ball that was dropped down one of three chimneys connected to three hiding boxes below by opaque tubes. Preschool children exhibited perseverative search at the box directly below the chimney where the ball was dropped even though the tubes were always visible and the children were given numerous trials and feedback. This behavior was interpreted as a naive theory of gravity. The current study set out to test the naive gravity theory hypothesis by reversing the motion of the event on a television. On half of the trials the object appeared to fall up the tube into one of the boxes which were now on the top of the apparatus. There were significantly more errors for ‘down’ trials as compared to ‘up’ trials which supports the hypothesis that children are biased to infer that falling objects travel in a straight line whereas anti-gravity events do not conform to this naive theory.     

Effect of communicative stress on the frequency and form-types of disfluent behavior in adult stutterers

Twenty adult stutterers spoke spontaneously for two minutes under each of four monitoring conditions of imposed communicative stress. Results indicated that being heard stuttering (The Auditory Component) is more stressful than being seen stuttering (The Visual Component). This finding applied to the total sample of subjects and for subgroups based on predominant disfluency form-type. In spite of changes in the frequency of molar disruptions, stutterers and stutterer-subgroups evidenced a consistent, stereotyped, molecular stuttering pattern in terms of specific disruption form-types.     

Two‐year‐olds’ naîve predictions for horizontal trajectories

Hood recently reported that preschool children overgeneralized the prediction that falling objects travel in a straight line in spite of extensive counter‐evidence that the object had been deviated to a non‐aligned box by a tube. This behaviour was interpreted as a na?^ve theory of gravity resulting from an overgeneralization derived from experience of falling objects. The current study set out to test whether there was also a significant tendency for 2‐year‐olds to predict that objects travel in a straight line in the horizontal plane. This was achieved by comparing search for an invisibly displaced object moving either vertically or horizontally. The findings confirmed a gravity bias for falling events but did not reveal a similar tendency in the horizontal condition. In the horizontal task, children were as likely to search at an incorrect non‐aligned box as an aligned incorrect box. This supports the interpretation of a na?^ve gravity bias present from at least 2 years of age.     

Effects of peripheral immune activation on social behavior and adrenocortical activity in aggressive mice: Genotype-environment interactions

To explore genetic-developmental differences in the biobehavioral effects of induced illness, males from two lines of mice selectively bred for high or low levels of aggressive behavior were injected with endotoxin (Escherichia coli, LPS: 0.25 mg/kg, 1.25 mg/kg, or 2.5 mg, i.p.) or saline. Body temperature, weight, and locomotor activity were monitored immediately before and 8 and 24 hr after injection. Twenty-four hours after injection, social behaviors were assessed in a 10-min dyadic test, and hypothalamus, spleen, and serum were collected. In both lines, endotoxin treatment increased behavioral immobility ("freezing") and decreased social exploration. Other effects showed line differences: Males from the high-aggressive line had a lower threshold to endotoxin-induced effects on body temperature, weight loss, spleen weight, and corticosterone. Social reactivity (startle response to mild social investigation) increased in the high-aggressive line and decreased in the low-aggressive line after treatment. In the high-aggressive line only, endotoxin decreased attack frequency and increased latency to attack. The interactions between selected line (genotype) and endotoxin treatment (environment) demonstrate that genetic-developmental differences in social and aggressive behavior may indicate the extent to which immune stimuli (e.g., bacteria, viruses, cytokines) function as "biobehavioral stressors." Aggr. Behav. 23:93–105, 1997.© 1997 Wiley-Liss, Inc.     

The God Mysticism Scale: a Brief Version

Pastoral Psychology - This paper presents two studies concerned with developing a brief version of the 32-item God Mysticism Scale (GMS; Hood Jr. and Williamson Journal of Psychology and...     

Conflicts with Friends: A Multiplex View of Friendship and Conflict and Its Association with Performance in Teams

Drawing on conservation of resources theory, multiplex social networks research, and the emerging conflict involvement perspective, the purpose of this study is to develop and test a multiplex view of conflict that explicitly accounts for the nature of the social relationships between those involved in intrateam conflict and how these multiplex relationships differentially impact team performance. Data were collected from 120 teams engaged in a 4-month business simulation. Relationship conflicts occurring among team members who are friends have a negative impact on team performance, whereas those occurring between non-friends have a positive impact on team performance. Although we also find non-friend task conflicts to be beneficial for team performance, friend task conflicts have no impact on team performance. This study highlights the dark side of workplace friendships and admonishes managers to pay close attention not only to conflicts among employees, but also to the relational closeness of those involved in conflict. The current study provides empirical support for the emerging conflict involvement perspective by explicitly assessing the number of individuals involved in conflict as well as the type of relationships between them. We also extend research on multiplex relationships from the individual to the team level of analysis. Finally, we respond to calls for studies of multiplexity that include both positive and negative relationships.     

Dynamics of Word Comprehension in Infancy: Developments in Timing, Accuracy, and Resistance to Acoustic Degradation

Online comprehension of naturally spoken and perceptually degraded words was assessed in 95 children ages 12 to 31 months. The time course of word recognition was measured by monitoring eye movements as children looked at pictures while listening to familiar target words presented in unaltered, time-compressed, and low-pass-filtered forms. Success in word recognition varied with age and level of vocabulary development, and with the perceptual integrity of the word. Recognition was best overall for unaltered words, lower for time-compressed words, and significantly lower in low-pass-filtered words. Reaction times were fastest in compressed, followed by unaltered and filtered words. Results showed that children were able to recognize familiar words in challenging conditions and that productive vocabulary size was more sensitive than chronological age as a predictor of children's accuracy and speed in word recognition.