Perceived discrimination and substance use in African American parents and their children: a panel study

The relation between perceived racial discrimination and substance use was examined in a panel of 684 African American families, using the prototype-willingness model of adolescent health risk (F. X. Gibbons, M. Gerrard, & D. Lane, 2003). Discrimination was concurrently and prospectively related to use in the parents and the children (mean age=10.5 years at Wave 1). The discrimination-->use relation in the parents was mediated by distress (anxiety and depression). Among the children, the relation was mediated by distress as well as their risk cognitions (favorability of their risk images and their willingness to use) and the extent to which they reported affiliating with friends who were using substances. Each of these relations with discrimination was positive. In contrast, effective parenting was associated with less willingness and intention to use. Theoretical and applied implications of the results are discussed.     

Child and mother variables in the development of stuttering among high-risk children: A longitudinal study

In this prospective study, 26 of the 93 preschool children with a parental history of stuttering who began to stutter were compared at preonset and 1 year later with those of a matched group of 26 children who continued to be seen as nonstutterers. These two groups of at-risk children were compared in terms of the development of their articulatory and language skills and in terms of the communicative style and speaking behaviors of their mothers. At preonset, the children who started to stutter demonstrated a faster articulatory rate than those who remained fluent. One year later, however, this difference was no longer statistically significant. The two groups of children did not differ in their linguistic skills at either of these time periods. Moreover, the communicative style and speaking behaviors of the mothers of the children who later began to stutter did not differ from that of the mothers of children who did not either prior to or after the onset of stuttering. This suggests that these variables did not contribute to the onset of stuttering or to its course.     

Feminism and reproductive technologies

...Rowland is a social scientist and a radical feminist, and she has undertaken the task of making readers think twice about reproductive technologies. If a reader isn't thinking twice, it will not do to blame it on Rowland and the shortcomings of her book. She has a good deal to say that is extremely important and that needs to be considered by anyone who is interested in the moral issues, in general, and the issues for women and children, in particular, that are raised by the new and emerging reproductive technologies. Her book should be widely read. And it should generate the worries it is written to generate.     

A FORTRAN program for lag sequential analysis of contingency and cyclicity in behavioral interaction data

One method for identifying contingency relationships in a sequence of observed behaviors studies occurrences of matching behaviors at successive event or time steps from a criterion event. This paper briefly summarizes the method and presents a computer program for generating lag conditional probabilities and associated measures for assessing statistical significance.     

Context and the motion aftereffect: occlusion cues in the test pattern alter perceived direction

A horizontally moving vertical grating viewed through a diamond-shaped aperture can be made to appear to move either upwards or downwards by introduction of appropriate depth-ordering cues at the boundaries of the aperture (Duncan et al. 2000 Journal of Neuroscience 20 5885-5897). The grating is perceived to move towards (and sliding under) occluding 'near' surfaces, and parallel to 'far' surfaces. Here we show that these depth-ordering cues affect the perceptual interpretation of the motion aftereffect (MAE) as well. After adaptation to unambiguous horizontal motion, the MAE direction deviates from horizontal towards near surfaces. However, the influence of depth-ordering cues on the illusory motion of the MAE is generally less than that seen for 'real' motion. Implications for theories of depth-motion and depth-MAE interactions are discussed.