Monitoring the Future (MTF) is an ongoing research program conducted at the University of Michigan's Institute for Social Research under a series of investigator-initiated research grants from the National Institute on Drug Abuse beginning in 1975. The integrated MTF study includes annual surveys of nationally-representative samples of 8th, 10th,…

The recent popularity of models that capture the dynamic coevolution of both network structure and behavior has driven the need for summary indices to assess the adequacy of these models to reproduce dynamic properties of scientific or practical importance. Whereas there are several existing indices for assessing the ability of the model to…

Students' different educational pathways were examined in relation to their disengagement during adolescence. The participants were Icelandic youth (N = 832) who were followed from age 14 to 22. Based on their academic achievement at age 15 and educational attainment at age 22 they were classified into groups that took expected versus unexpected…

The purpose of this study was to examine women's leisure time physical activity (LTPA) before pregnancy, during pregnancy, and through the first 7 months postnatal. Pre- and postnatal women (n = 309) completed the 12-month Modifiable Activity Questionnaire and demographic information. Multilevel modeling was used to estimate a growth curve…

This longitudinal study examined links between disorganization and atypical maternal behavior at 12 and 24 months in 71 adolescent mother-child dyads. Organized attachment and maternal not disrupted behavior were more stable than disorganization and disrupted behavior, respectively. At both ages, disorganization and maternal disrupted behavior…

Temperament is examined from a longitudinal, within-individual perspective in order to investigate short-term change and patterns of temperament changes. For 100 consectutive days five mothers completed a temperament survey, reporting on their own and their two-year-old children's behavior. Patterns of change were identified for both mothers and…

The purposes of this paper are: (1) to examine the extent to which behavior modifiers who work in classroom settings have given attention beyond lipservice to the need for longitudinal or follow-up data; and (2) to discuss problems in the methodology and design of followup research. (Author)

Examined continuity, stability, and change in behaviors reflecting infant reactivity and regulation. Subjects were 100 infants of 5 and 10 months old. Found that infant behaviors during frustrating situations showed both change and continuity, but the relationship between reactivity and regulation changed in that both factors became more…

This longitudinal study of changes in play behavior in preschool children reports decreases in less mature forms of play and increases in more mature forms of play over time. The study was designed to test the assumption that the play of young children develops in a progressive manner. Ten 3-year-olds and ten 4-year-olds were observed during free…

DURING THE PERIOD 1930 TO 1938, THE PATTERNS OF BEHAVIOR OF A BASIC SAMPLE OF 138 THREE TO FOUR AND ONE-HALF YEAR-OLD CHILDREN WERE OBTAINED BY TEACHER RATINGS. THE TEACHERS USED A RATING CHART OF 61 BEHAVIOR VARIABLES. TEN BEHAVIOR PATTERNS WERE ISOLATED FROM THIS GROUP. EACH PATTERN, FOR EXAMPLE, EMOTIONAL REACTIVITY, WAS COMPRISED OF SEVERAL…

THE INTENT OF THIS STUDY WAS TO DETERMINE THE PATTERNS OF BEHAVIOR OF NURSERY SCHOOL CHILDREN, AND TO DETERMINE HOW THESE ARE RELATED TO BEHAVIOR PATTERNS AND ACHIEVEMENT IN ELEMENTARY SCHOOL. IN 1930-1938, THE BEHAVIORS OF 138 NURSERY SCHOOL CHILDREN WERE CHARACTERIZED BY THEIR TEACHERS IN TERMS OF 61 MOLAR VARIABLES. SUB-SAMPLES OF THIS GROUP…

A review of the major literature examining human work behavior from the perspective of developmental psychology indicates that, although many issues pertaining to the meaning of the concepts of change and development are still unresolved, a great potential exists for cross-fertilization between developmental and vocational psychology. Vocational…

A study was made of children beginning school, to learn more about their response to school and how to help them adapt to it. Participants in the study's year-long first phase were 36 teachers from two very different local education authorities (LEA) and 92 children who started school in 1985-86. Teachers identified activities and organization in…

A 3-year study in 8 middle schools tested a program to improve adolescent conduct. The program attempted to improve clarity and enforcement of rules, classroom organization, school-home communication, and increase reinforcement of positive behavior. Where it was well-implemented, student conduct improved significantly. (SLD)