Discourse and Cognition. Edwards,D. (1997). Sage,London: pp. 368. £49.50 ISBN 0‐8039‐7696‐8 (hardback), £15.99 ISBN 0‐8039‐7697‐6 (paperback)

Wendy Drewery is a philosopher by training and teaches health development and counselling at the University of Waikato, Hamilton, New Zealand. Copyright © 2000 John Wiley & Sons, Ltd.     

Maternal control style and the mastery motivation of one-year-olds

Forty-one mothers and their 12-month-old infants participated in a study of the effects of maternal control style on infant mastery motivation. Three scales were designed to assess maternal control style during a mother-infant play session. Mastery motivation was assessed in an experimenter-administered structured toy play procedure. Three components, persistence, competence, and affect, comprised the measure of mastery motivation. Mothers also completed questionnaires on child-rearing attitudes, infant temperament, and control style. Results showed that maternal attitudes and behavior were correlated with infant mastery motivation. More specifically: autonomy-oriented control behavior, sensitive care and knowledge of child-rearing were positively related to infant mastery motivation. The results provide converging evidence regarding the multiple aspects of maternal behavior which affect infant motivation.     

Effects of word frequency and age of acquisition on short-term memory span

The experiments reported examine the effects of two highly related variables, word frequency and age of acquisition, on short-term memory span. Short-term memory span and speech rate were measured for sets of words which independently manipulated frequency and age of acquisition. It was found that frequency had a considerable effect on short-term memory span, which was not mediated by speech rate differences—although frequency did affect speech rate in one experiment. For age of acquisition, this situation was reversed; there was a small but significant effect of age of acquisition on speech rate, but no effect on memory span. This occurred despite results confirming that the stimuli used in the experiments produce an effect of age of acquisition on word naming. The results are discussed in terms of a two-component view of performance on short-term memory tasks.     

A model for predicting the outcomes of basketball games

We investigated the task of predicting the outcomes of sporting events, in particular, basketball games. In two experiments, college students predicted the outcomes of a series of National Basketball Association (NBA) games. Following each prediction, the subject received feedback in the form of the actual outcome of the NBA game. After a period of initial learning about the relative strengths of the teams, the subjects were surprisingly successful in their predictions. We examined expert–novice differences by comparing the published predictions of professional oddsmakers to the predictions of the experimental subjects. The average predictions by the subjects were approximately as accurate as the predictions of experts. Finally, we applied a mathematical model, developed originally as an account of simpler learning experiments, to the subjects' responses. We found that the course of the subjects' learning about the teams was well-described by this model.     

THE IMPACT OF FUNCTIONAL ANALYSIS METHODOLOGY ON OUTPATIENT CLINIC SERVICES

The impact of the article by Iwata, Dorsey, Slifer, Bauman, and Richman (1982) on research in severe behavior disorders has been impressive. Equally impressive, however, but not as fully recognized, has been the impact of this methodology on the routine professional activities of those who employ functional analysis methods in their daily work. As one example of this impact, we describe the evolution of assessment procedures based on “brief functional analysis” methodology in our outpatient clinics. Less apparent have been the collateral effects that occur from using these procedures. Interactions with clients and colleagues have changed in ways that result in increased positive reinforcement. In this article, we briefly discuss the positive impact functional analysis has had on one specific work behavior—outpatient clinic assessment—and describe some of the generalized effects we have experienced in related aspects of our daily professional activities.     

Impulsivity, fight history, and camaraderie as predictors of a willingness to escalate a disturbance

This field study examined the relationships between six predictor variables and a self-report measure of spectators' likelihood of joining in a crowd disturbance. Subjects were males (N = 78) found in attendance at an ice hockey game. The variables jects were males (N = 78) found in attendance at an ice hockey game. The variables related to the likelihood of escalating a disturbance included subjects who were more impulsive, had a history of fighting, were younger, saw provocations as more volatile, liked to watch player fights and attended with others. A multiple regression analysis yielded a solution that accounted for 52.9% of the variance. The results were discussed against the background of previous research examining the factors associated with spectators' propensity for involving themselves in crowd disorders. The authors wish to thank the Medicine Hat Tigers Hockey Club for their cooperation.