Dynamical Patterns in the Development of Clapping

The development of a complex rhythmical behavior—clapping—is modeled using a formal, explicit model of coupled oscillator dynamics. Even though this behavior manifests a good deal of nonstationarity and high variability within and across subjects, results indicate that these properties may be dynamically modeled quantitatively as well as qualitatively. Results suggest that clapping goes through a less stable period of relative coordination between 3 and 7 years before more stable absolute coordination is achieved. Nevertheless, in that the clapping behavior is affected in highly predictable ways by inertial loading of the limbs, the same underlying dynamic seems responsible for the coordination of both the younger and older children. Developmentally, the behavior of the coordination variable (relative phase) changes from a nonconstant magnitude in younger clappers to a constant magnitude in older clappers. These results suggest that development of proficiency in rhythmic motor skills displays developmental changes that can be understood well in dynamical terms.     

Linking family hardship to children's lives

The impact of drastic income loss on children is mediated by a number of family adaptations, including the shift toward more labor-intensive households and altered relationships. Using newly developed codes on parenting behavior during the Great Depression, this study investigates the role of parental behavior (rejecting, nonsupportive) in linking economic hardship to children's lives in the Oakland Growth Study. The results extend beyond those reported in Children of the Great Depression by showing that economic hardship adversely influenced the psychosocial well-being of girls, but not boys, by increasing the rejecting behavior of fathers. The parenting behavior of mothers did not vary significantly by income loss. In addition, the rejecting influence of hard-pressed fathers was more pronounced in relation to less attractive daughters, as judged by physical features. Attractive daughters were not likely to be maltreated by their fathers, no matter how severe the economic pressure. These outcomes on family mediation and conditional effects underscore the importance of viewing economic decline in relation to both the child's characteristics and parenting behavior. An understanding of the effects of economic decline in children's lives requires knowledge of parent and child behavior within the family and life course.     

SOCIAL AND PERSONALITY CHARACTERISTICS OF GIFTED STUDENTS

This study aimed at investigating the relationship between intellectual, social, personal and personality variables of academically gifted secondary school students. A total of 297 tenth grade boys and girls were identified on the basis of three main criteria: 1. Academic achievement with special emphasis on Arabic language, science and math scores; 2. Behavioural traits; 3. General mental ability and general adjustment. Data related to socioeconomic status and personal characteristics were also collected. Results of the analysis of variance showed that there were significant differences between gifted and nongifted groups in general mental ability, achievement, general adjustment, behavioural traits, personal and social variables, in favour of the former.     

Parents do matter: trajectories of change in externalizing and internalizing problems in early adolescence

This study examined the relative influence of three parenting behaviors (support, behavioral control, and psychological control) and deviant peers on trajectories of externalizing and internalizing problems in early adolescence. A white, working-to-middle-class sample of adolescents and their mothers and fathers in two-earner families participated in a 32-year longitudinal study (N = 109 families). The study began when the adolescents were in sixth grade (M age = 11.5 years). Analyses showed that parents' firm behavioral control seemed to halt the upward trajectory in externalizing problems among adolescents with deviant peers. Initial levels of internalizing problems were higher among adolescents with parents who reported lower levels of behavioral control and among adolescents with deviant peers. This study suggests that parenting exerts an important influence in adolescents' lives and may do so even in the face of potentially negative peer influence.     

Research note: Some corrections and suggestions for working with the national faculty survey databases

Our ability to understand the faculty work environment has been greatly enhanced by the availability of largescale national surveys of the professoriate since the 1950s. This technical note identifies ways to improve data comparability among the national faculty surveys. It begins by identifying the national surveys and some of their attributes. The study then estimates faculty sizes and calculates weights for faculty in selected disciplines and institution types. The weights are designed specifically for four surveys conducted in 1969, 1975, 1980, and 1988.     

The relation between nonclassroom contact with faculty and students' perceptions of instructional quality

This study assessed the relationship between the frequency of college students' informal nonclassroom contact with faculty for each of six purposes and their generalized perceptions of instructional quality. Two factorially derived components of instructional quality (based on a 14-item instrument) were used as the dependent variables in two regressions on the six types of contact. The frequency of contacts for discussing intellectual or course-related matters and for discussing a campus issue or problem made statistically significant and unique contributions in predicting students' perceptions of instructor concern and ability.An earler version of this paper was presented to the annual conference of the American Educational Research Association, Boston, April 1980.     

The Role of Reform Curricular Materials in an Internship: The Case of Alice and Gregory

This report describes a case study of asecondary school mathematics internship wheremost of the elements of the internship ecologywere aligned with calls by the National Councilof Teachers of Mathematics [NCTM] for reform.Much research has been done on the lack ofimpact of teacher education programs on teacherclassroom behavior. Often this results fromdissonance between the philosophy and goals ofuniversity teacher education programs and thoseof schools. The case documented here offers aninstance of alignment between the universityprogram and the school internship site. Thefindings showed that within this supportiveatmosphere the reform curricular materialsbeing used in the classroom had a strong andlargely positive influence on the character ofthe internship experience, and on the intern'slearning. The form and content of the materials– Core-Plus Mathematics Project'sContemporary Mathematics in Context –supported reform-oriented development for theintern by providing particular foci to theplanning discussions between the intern and thementor. These areas of focus were: (a) themathematics content itself, (b) conceptualunderstanding as a main goal for instruction,and (c) the use of questioning as the bestmeans of guiding students to thatunderstanding. The findings highlight theimportance of developing reform-supportiveenvironments for intern teaching placements.