College courses and changes in dogmatism

To observe the impact of an experimental human relations course and to compare changes occurring in students in this course with changes in students having other University experiences, most University of Minnesota entering freshmen were asked to complete the Rokeach Dogmatism Scale before the beginning of the school year in 1970, and selected groups were retested at the end of the first quarter. Mean dogmatism scores for all groups, including the experimental group, declined. In terms of dogmatism, the results did not suggest that the experimental course had a unique effect on students. Students selecting varying college experiences differed extensively at both times of testing and retesting.The author expresses his appreciation to James Rounds, who assumed much responsibility for the collection and analysis of the data.     

Correspondence of Pubertal Neuroendocrine and Tanner Stage Changes in Boys and Associations With Substance Use

This study examined correspondence between timing (onset) and tempo (rate) of sexual maturation prospectively (average ages 11–16 years) measured by gonadal hormones and secondary sex characteristics (Tanner stage) using dual-process models, and associations of these measures with substance use (SU) involvement in boys at age 16 years (N = 534, 77.5% White/22.5% Non-White). All measures of timing were highly associated. Early Tanner stage timing often predicted slower increases in gonadal steroids, but not the reverse; patterns varied by ethnicity. Hormone and Tanner stage measures were similar earlier in development but diverged later in development. In White boys only, early timing of the pubertal rise in testosterone was associated with increased SU involvement, suggesting a physiological rather than psychosocial mechanism of association.     

Preschool phonological representations and development of reading skills

Individual differences in the quality of phonological representations of kindergarten children may be predictive of Grade 1 phonological awareness and reading development. Three longitudinal studies are presented that attempt to measure variance in the quality of the phonological structures within lexical items using three tasks: non-word repetition, cued word fluency, and a gated auditory word recognition task. Nonword repetition was a consistent predictor of later phonological awareness, even after current phonological awareness and vocabulary knowledge were taken into account. The results of the three studies provide inconclusive support for the theory that individual differences in the quality of phonological representations play an important role in the development of explicit phonological awareness and reading acquisition. An important finding of the third study is that caution needs to be maintained in measuring skills in preschoolers as stability of results can be an issue when interpreting the relations between variables. However, the present studies do confirm that individual differences in vocabulary, nonword repetition, and phonological awareness are important factors in predicting the development of reading related skills.     

Dyslexia and education in the 21st century

This paper both reviews the other papers in this special issue and puts them in the context of the current agenda of research in dyslexia education. The pluralistic nature of the field is explored with reference to this special issue. The paper suggests a way forward for the field in terms of a developing research agenda for dyslexia education as we progress further into the 21st century.     

Assessment of the effects of student response systems on student learning and attitudes over a broad range of biology courses

With the advent of wireless technology, new tools are available that are intended to enhance students' learning and attitudes. To assess the effectiveness of wireless student response systems in the biology curriculum at New Mexico State University, a combined study of student attitudes and performance was undertaken. A survey of students in six biology courses showed that strong majorities of students had favorable overall impressions of the use of student response systems and also thought that the technology improved their interest in the course, attendance, and understanding of course content. Students in lower-division courses had more strongly positive overall impressions than did students in upper-division courses. To assess the effects of the response systems on student learning, the number of in-class questions was varied within each course throughout the semester. Students' performance was compared on exam questions derived from lectures with low, medium, or high numbers of in-class questions. Increased use of the response systems in lecture had a positive influence on students' performance on exam questions across all six biology courses. Students not only have favorable opinions about the use of student response systems, increased use of these systems increases student learning.