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Direct linkGurven, Michael; Fuerstenberg, Eric; Trumble, Benjamin; Stieglitz, Jonathan; Beheim, Bret; Davis, Helen; Kaplan, Hillard – Developmental Psychology, 2017
Cognitive performance is characterized by at least two distinct life course trajectories. Many cognitive abilities (e.g., "effortful processing" abilities, including fluid reasoning and processing speed) improve throughout early adolescence and start declining in early adulthood, whereas other abilities (e.g., "crystallized"…
Descriptors: Foreign Countries, Agricultural Occupations, Cognitive Ability, Age Differences
Solmeyer, Anna R.; McHale, Susan M.; Crouter, Ann C. – Developmental Psychology, 2014
This study examined the associations between sibling intimacy and conflict and youths' reports of risky behavior in a sample of adolescents ages 11-20. Participants were mothers, fathers, and sibling dyads in 393 families who were interviewed annually for 3, 4, or 5 years. Multivariate multilevel models tested longitudinal links between sibling…
Descriptors: Sibling Relationship, Adolescents, Longitudinal Studies, Intimacy
Molenaar, Peter C. M.; Sinclair, Katerina O.; Rovine, Michael J.; Ram, Nilam; Corneal, Sherry E. – Developmental Psychology, 2009
Individuals change over time, often in complex ways. Generally, studies of change over time have combined individuals into groups for analysis, which is inappropriate in most, if not all, studies of development. The authors explain how to identify appropriate levels of analysis (individual vs. group) and demonstrate how to estimate changes in…
Descriptors: Individual Development, Parent Child Relationship, Time Perspective, Models
