Reversing the word-length effect: A comment on Caplan, Rochon, and Waters

Caplan, Rochon, and Waters (1992) report a failure to observe the poorer immediate serial recall for words of longer spoken duration obtained by Baddeley, Thomson, and Buchanan (1975) and subsequently replicated by others. Indeed, they find a significant reversal of this effect. We present evidence that the material used by Caplan et al. differs only minimally in spoken duration under speeded articulation conditions (Exp. 1 = 1.9%, Exp 2 = 2.31%), in contrast to a clear difference in the case of the original Baddeley et al. material (24.5%). It is further suggested that the reversal of the word-length effect may result from differences in acoustic similarity between the “long” and “short” word sets used by Caplan et al. We conclude that the evidence continues to indicate that longer spoken duration is associated with reduced memory span.     

Sophistry in Vygotsky: Contributions to the Rhetorical and Poetic Pedagogy

Studies in Philosophy and Education - This work relates L. S. Vygotsky’s theory to the rhetorical and poetic pedagogy, which is a set of educational ideas and practices derived from the...     

Medical Psychology in Brazil

In 1962, Psychology was officially accorded professional status in Brazil. Since then the profession has been undergoing continuous development, but the training of psychologists still suffers from flaws that are reflected in the public heath service, SUS (Sistema Único de Saúde). However, SUS itself is also open to criticism: the service is badly distributed, the number of posts for psychologists is limited, and working conditions are poor. Nevertheless, many positive changes are occurring. These include plans to alter academic training to better meet the needs of the Brazilian population, an expansion of the roles played by psychologists in the health service, and increasing research activity. These and many other changes suggest that the progressive evolution of the profession in Brazil will continue.     

Social science stereotypes of the Mexican American woman: policy implications for research

Reviewing the social science literature on the Chicana or Mexican American woman reveals a tenaciously perpetuated stereotype in which she appears almost exclusively as a submissive maternal figure. This may be related to an on-going trend to support studies of interpersonal or cultural characteristics of Chicanas and a resistance to undertake evaluations of systemic discrimination against Mexican American women. Almost all such studies investigated lower class samples, thus confounding ethnicity with socioeconomic status. The size and selection of many of the samples are questionable for purposes of generalizing to the entire population. Because many concepts are not defined in behavioral terms, they are seldom assessed empirically. The main concern is to what extent social scientists and the media are dictating norms to the Chicano family and to what extent are social planners and educators being influenced by these images. Examples from 3 distinct areas of research conclude with interpretations of Mexican American women that differ considerably from those with a heavy emphasis on cultural values: 1) demographic analyses of the 1970 Public Use Samples of the census that acknowledge the disadvantaged economic position of Mexican Americans; 2) studies that are beginning to measure empirically the family dynamics of Mexican Americans; and 3) family planning studies that attempt to examine the interaction between health care delivery systems and Mexican American contraceptive behavior. Trained and experienced Chicana researchers are needed to offset the male orientation and ethnocentrism that have characterized the social sciences.     

Children’s incidental learning of the colors of objects and clothing

Few researchers have examined adults’ and children’s incidental recall of color information. In Experiment 1, we examined how well children recalled the colors of items seen in a first aid demonstration. Color recall of objects was above chance levels after three different time delays. However, recall of clothing color was poor. In Experiment 2, we examined whether colors of items from the same category (e.g., items of clothing) were more difficult to remember than distinct items (i.e., belonging to a range of different categories). Children and adults saw 18 items from three different categories. Color recall was above chance levels. The colors of distinct items were recalled more often than the color of category items. The results suggest that color is encoded automatically to some extent. However, participants had difficulty in recalling the color of clothing worn by the experimenter.     

Insensitivity of visual short-term memory to irrelevant visual information

Several authors have hypothesized that visuo-spatial working memory is functionally analogous to verbal working memory. Irrelevant background speech impairs verbal short-term memory. We investigated whether irrelevant visual information has an analogous effect on visual short-term memory, using a dynamic visual noise (DVN) technique known to disrupt visual imagery (Quinn & McConnell, 1996b). Experiment 1 replicated the effect of DVN on pegword imagery. Experiments 2 and 3 showed no effect of DVN on recall of static matrix patterns, despite a significant effect of a concurrent spatial tapping task. Experiment 4 showed no effect of DVN on encoding or maintenance of arrays of matrix patterns, despite testing memory by a recognition procedure to encourage visual rather than spatial processing. Serial position curves showed a one-item recency effect typical of visual short-term memory. Experiment 5 showed no effect of DVN on short-term recognition of Chinese characters, despite effects of visual similarity and a concurrent colour memory task that confirmed visual processing of the characters. We conclude that irrelevant visual noise does not impair visual short-term memory. Visual working memory may not be functionally analogous to verbal working memory, and different cognitive processes may underlie visual short-term memory and visual imagery.