Examines the Rodgers, Rowe, and Buster (1998) epidemic model of the onset of social activities for adolescent sexuality. Maintains that its strengths include its theoretical potential to generate new hypotheses for further testing at the individual level. Asserts that its limitations include the lack of a well-developed statistical framework and…

Reviews and comments on Stoolmiller's (1998) criticisms of an epidemic model of the onset of social activities (EMOSA) and about nonlinear modeling in general. Discusses the idea of social contagion as a general theoretical tool. (Author)

Expands an existing nonlinear dynamic epidemic model of onset of social activities (EMOSA), motivated by social contagion theory, to quantify the likelihood of pregnancy for adolescent girls of different sexuality statuses. Compares five sexuality/pregnancy models to explain variance in national prevalence curves. Finds that adolescent girls have…

The social psychological constructs postulated by Garner, Clement et al. are integrated into a proposed new framework of second/foreign language (L2) learning motivation. The proposed model comprises three levels: language, learner, and learning situation. Practical examples for motivating L2 learners are presented. (55 references) (LB)

This paper examines educational applications of computer-based communications to identify unique tools for learning provided by this medium and to identify key features of successful text-based computer mediated communications (CMC) projects. A review of CMC programs provides guidelines for designing effective teacher training programs in CMC.…

Examines potential sources of bias in aptitude and achievement testing of minority and, particularly, Black students. Holds that bias in standardized tests cannot be properly understood without reference to the socioeconomic matrix from which it has evolved. (Author/GC)