Purpose: The larynx plays a role in swallowing, respiration, and voice production. All three functions change during ontogeny. We investigated ontogenetic shape changes using a mouse model to inform our understanding of how laryngeal form and function are integrated. We understand the characterization of developmental changes to larynx anatomy as…

"Leisure and Human Development" is an examination of the link between human development and behavior in a context, leisure, that has been described as encompassing one third of people's time. This text examines human development as it affects and is affected by leisure--what people do when they are relatively free to choose their…

We discuss the major processes involved in individuals' motivation and self-regulation of goal striving throughout the life course. While much is regulated based on the biological and societal scaffolding of lifespan development, certain challenges for motivation and self-regulation are more substantial and need to be managed by the individual,…

The authors examined the development of self-esteem across the life span. Data came from a German longitudinal study with 3 assessments across 4 years of a sample of 2,509 individuals ages 14 to 89 years. The self-esteem measure used showed strong measurement invariance across assessments and birth cohorts. Latent growth curve analyses indicated…

Self-esteem has been regarded as one of the most pivotal component in almost every day human daily activities. Trajectory of self esteem development means that on the average, one's self-esteem is relatively high in childhood, then drops during adolescence, later to arise gradually throughout adulthood, and then declines sharply in old age. The…

Universities and graduate education are increasingly viewed as part of the emerging lifelong learning and education system and we see the evidence of this as the average age of graduate students increases. We are also seeing an increasing emphasis on education for employment in the lifelong learning and education literature, and this discourse is…

Two cohorts of alumni, leading-edge and trailing-edge baby boomers, first tested in their college years, were followed to ages 43 (N = 136) and 54 (N = 182) on a measure of Erikson's theory of psychosocial development. Hierarchical linear modeling was used to model the trajectory of growth for each psychosocial issue across middle adulthood. As…

This article presents the author's response to Wyn and Woodman (2006) who have urged shifting youth research away from a transition paradigm to a generation paradigm. The evidence that they marshal in support is mainly from Australia, but their arguments are intended to be relevant throughout the western world. Here, the author argues that Wyn and…

Gilbert Gottlieb's data and epigenetic approach support the conclusion that organisms are functionally-whole agents at each phase of development rather than simply incompletely developed adults prior to sexual maturity and deteriorated adults in old age. This implies that organisms construct distinct ontogenetic niches at each phase of…

Although the majority of researchers are probably in agreement regarding the existence of childhood depression, there is less than consensus regarding its structure. In this study age-related differences in child and adolescent self-reports of depression were assessed using two different analytic strategies. Subjects were children (N=515) and…

The present study used meta-analytic techniques (number of samples = 92) to determine the patterns of mean-level change in personality traits across the life course. Results showed that people increase in measures of social dominance (a facet of extraversion), conscientiousness, and emotional stability, especially in young adulthood (age 20 to…

Determined nonbiological characteristics that discriminated between age groups and hypothesized life stages for these groups (provisional adulthood, age 30 transition, and settling down). Life stages do not fit completely but were of some use in describing the age groups, particularly provisional adulthood and settling down. (Author/BEF)

The basis of young children's performance of judgments of recency and frequency was investigated using a modified version of Huppert and Piercy's [Huppert, F. A., & Piercy, M. (1978). The role of trace strength in recency and frequency judgements by amnesic and control subjects. Quarterly Journal of Experimental Psychology, 30, 347-354]…

The developmental course of 9 temperament dimensions were documented in 104 children from ages 2 through 12. Overall, with the advancement of age, children's temperament showed less developmental change as indexed by mean ratings on the temperament dimensions and greater cross-time stability as assessed by the rank ordering of children across…

Examined emergence of a writing system in 4- to 12- year-olds. Found transition occurring around age 6 in which production was more fluent for writing than drawing and activation of one system interfered with the other. Modeling consolidation of both phenomena generated testable parameters for development, involving increasing specialization and…