Differences in motivation during adolescence relative to childhood and adulthood in autism was tested in a cross-sectional study. 156 Typically developing individuals and 79 individuals with autism ages 10-30 years of age completed a go/nogo task with social and non-social cues. To assess age effects, linear and quadratic models were used.…

One particular developmental task during adolescence is to regulate fluctuating moods to successfully transition through this period. The aim of this person-centered study was to identify distinct developmental trajectories of adolescent mood variability and to compare adolescents in different trajectories on changes in depressive symptoms,…

The investigators compared the perceived attainment of developmental tasks by 181 German adolescents with hearing loss and 254 peers without hearing loss. The adolescents with hearing loss were attending special schools for students who are deaf or hard of hearing. On average, the two groups perceived similar levels of success across the assessed…

Previous studies with adults have shown that age has an important influence on laypeople's wisdom theories. However, children's and adolescents' understanding of the concept of wisdom has hardly been investigated. In the current study, 80 children and adolescents completed a questionnaire concerning an event where they had been wise and an event…

Examines the role of basic cognitive-processing efficiency as the source of developmental variance in cognitive performance. Two experimental tasks, memory and visual scanning, were used to investigate age effects on the search-processing parameter. Subjects were 9-, 11-, 13-, and 15-year-old children. (CM)

The use of rules on nonverbal balance scale problems was studied among 5- to 19-year-olds. Latent class analyses indicated that children used rules, that different rules were used by children of different ages, and that both consistent and inconsistent rule use occurred. A model for the development of reasoning about the balance scale task was…

Perceptions of parents and their adolescent children about a number of developmental tasks were compared for 508 Dutch families. Parents consistently indicated later ages for the achievement of developmental tasks than did adolescents, but they had similar views of the sequence in which achievement of developmental tasks should occur. (SLD)

Three samples of 8- to 16-year olds were assessed three times at yearly intervals on eight water-level items. Within-child change over age was viewed as stochastic process of the child changing or remaining in one of three latent strategy states. Although there was improvement in task performance over age, the general finding was that strategy…

This study examined the transition from concrete to formal operations in very bright children in an effort to determine whether high ability in concrete operations would carry over into formal operational ability, and also to investigate precocity in regard to formal operations. Subjects were 38 white middle-class children ranging in age from…

Describes and discusses the rule-assessment approach, a new research strategy for studying developmental sequences in children's acquisition of knowledge. Four experiments were conducted to illustrate the utility of this approach across a variety of concepts and a wide range of ages (three-year-olds to college students). (Author/CM)

A Self-Concept Scale for Adolescents based on Havighurst's Developmental Tasks for Youth was constructed to reflect the adolescents' perceptions of their ability to achieve these tasks in relation to personal abilities, the abilities of others, and the criteria for successful task completion. A validity and reliability study showed the scale to be…

A questionnaire attempting to define adolescence from the adolescent's view was administered to 300 students, 50 males and 50 females in each of 3 grades (grades 6, 9, and 12). The questionnaire examined (1) ages perceived as dividing points between adolescence, childhood and adulthood; (2) tasks seen as most important in advancing from one period…

The relationship between grade point average, grade level, age, sex, social class, and self-concept as defined by Havighurst's Developmental Tasks for Youth was investigated. Subjects were 280 adolescents ranging in age from 13 through 18 and coming from a variety of social classes. Each subject completed a Self-Concept Scale for Adolescents,…

A Self-Concept Scale for Adolescents based on Havighurst's Developmental Tasks for Youth was constructed to reflect adolescents' perceptions of their ability to achieve these tasks in relation to personal abilities, the abilities of others, and the criteria for successful task completion. A validity and reliability study showed the scale to be…

A Self-Concept Scale for Adolescents based on Havighurst's Developmental Tasks for Youth was constructed to reflect adolescents' perceptions of their ability to achieve these tasks in relation to personal abilities, the abilities of others, and the criteria for successful task completion. A validity and reliability study showed the scale to be…