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Combinations of Epoch Durations and Cut-Points to Estimate Sedentary Time and Physical Activity among Adolescents
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Fröberg, Andreas; Berg, Christina; Larsson, Christel; Boldemann, Cecilia; Raustorp, Anders – Measurement in Physical Education and Exercise Science, 2017
The purpose of the current study was to investigate how combinations of different epoch durations and cut-points affect the estimations of sedentary time and physical activity in adolescents. Accelerometer data from 101 adolescents were derived and 30 combinations were used to estimate sedentary time, light, moderate, vigorous, and combined…
Descriptors: Physical Activity Level, Life Style, Measurement Equipment, Foreign Countries
Identity and the Body: Trajectories of Body Esteem from Adolescence to Emerging Adulthood
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Nelson, Sarah C.; Kling, Johanna; Wängqvist, Maria; Frisén, Ann; Syed, Moin – Developmental Psychology, 2018
Although Erikson (1968) originally conceptualized identity development as a process of becoming at home in one's body, little work has been done linking identity development and research on the body. This study examines how trajectories of the development of body esteem over time are related to young people's sense of identity and psychological…
Descriptors: Identification (Psychology), Human Body, Self Esteem, Preadolescents
Heredity-Environment Influences on Growth and Development During Adolescence. A Longitudinal Study of Twins. Studies in Education and Psychology 4.
Fischbein, Siv – 1979
A summary and discussion of a series of studies considered the dilemma that equal educational treatment of all children in public schools appears likely to increase the spread of differences among them in educational achievement. Longitudinal studies of pairs of identical and of fraternal twins in Sweden from 10 to 18 years of age considered the…
Descriptors: Achievement Tests, Adolescents, Aptitude Tests, Body Height
Physical and Mental Development in Swedish Urban Schoolchildren. Studies in Education and Psychology 5.
Westin-Lindgren, Gunilla – 1979
From 1964-71, 323 pairs of twins and 740 age-matched controls born in 1954-55, were investigated. Compared to schoolchildren in 1880 and 1940 the children in the present study were taller, reached maturity earlier and passed through puberty faster. No differences between socioeconomic strata defined by father's occupation and family income were…
Descriptors: Academic Achievement, Body Height, Body Weight, Cognitive Ability