Intelligence scales for the blind: A review with implications for research

The verbal section of the Wechsler Intelligence Scale for Children (WISC) has become a frequently used assessment device and research tool with blind children. This article reviews and critiques studies involving the WISC with samples of blind subjects. Discussion focuses on reliability, validity, and research strategy. Recommendations and suggestions for further research place emphasis upon experimental analysis of behavior.     

Standing's power function in long-term memory

Summary Standing (1973) and Murray (1975) have both found that the number of items retrieved from long-term memory is a power function of the number of items presented. The present research reports three further experiments designed to validate this power function: the law was found to be upheld in paired associates recognition (for four levels of meaningfulness); for free recall (with or without retrieval cues at presentation and/or recall); and for incidental and intentional free recall and recognition. Some data of Roberts (1972) were also found to be fitted by a power function. The discussion deals with power functions as compared with linear functions and also with the relationships between slopes and intercepts of power functions.This research was supported by National Research Council of Canada Grant AO-126 to D.J. Murray. W.E. Hockley served as research assistant for Experiments 1 and 2; Experiment 3 was an Honours Thesis project carried out by Carol Pye.     

Computer signal detection by monitoring auditory evoked potentials

A digital computer, using a simple decision algorithm, attempted to determine when an acoustical signal had been presented to a cat by monitoring the amplitude of the evoked potentials (EP) at brainstem auditory nuclei. The signal-to-noise level at threshold and the shape and range of the decision model “psychometric functions” were similar to those obtained from humans in the same task. In addition, the detection performance obeys Weber’s law, the mean amplitude of the EP increases monotmonically with signal level, the variance of the amplitude is independent of both signal and noise level, and both the mean latency and the variance of the latency of the peaks decrease with increasing signal level. These findings suggest that the synchronization in firing of a population of single units plays a part in determining the amplitude of the EP. Interaural effects in detection performance were found at the inferior colliculus and, to a lesser extent, at the superior olive.     

An analysis of mutual assistance

Why should community psychology be interested in mutual assistance? Mutual assistance organizations represent not an alternative to professional care by an addition to resources in the community of a kind that makes for a more competent community (Iscoe, 1974). Mutual assistance also reflects the values of empowerment that many community psychologists accept as primary (Rappaport, 1981). For those persons who suffer with conditions that may be attributed to oppressive social environments, there is no alternative to collective political and social action to produce change. The developing mutual assistance movement provides an unparalleled opportunity to enhance our understanding of the meaning and significance of social support and the conditions under which people change. Those of us in the field have every reason to embrace this movement for it is truly in keeping with the vision of community psychology.     

Anxiety and aspects of health behavior among adolescents in Northern Ireland

A sample of 238 15- to 16-year-old secondary school students from Northern Ireland answered a questionnaire in their schools about the level of anxiety and some aspects of their health behavior. Analysis of the findings showed that these teenagers had no higher anxiety than a Northern American sample of teenagers. In addition, anxiety was clearly correlated with a variety of health complaints and with use of the health service. The findings are discussed with reference to previous research on adolescent health and on stress in Northern Ireland.     

Psychopharmacological therapy of deviant sexual behavior

Psychopharmacological approaches to controlling male deviant sexual behavior, especially sexual recidivism and sexual deviants on probation, have been reported in psychiatric literature. In Europe, the drug cyproterone acetate, and in the United States, medroxyprogesterone acetate, Provera, and in the long-acting form, Depo-Provera, have all benefitted exhibitionists and pedophiliacs, and reduced sex drive in sexual deviants. The combination of pharmacotherapy and either psychotherapy or behavioral therapy has been the most effective approach to reducing the sex drive of sexual deviants.