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Direct linkMäkelä, Tiina E.; Peltola, Mikko J.; Nieminen, Pirkko; Paavonen, E. Juulia; Saarenpää-Heikkilä, Outi; Paunio, Tiina; Kylliäinen, Anneli – Developmental Psychology, 2018
Fragmented sleep is common in infancy. Although night awakening is known to decrease with age, in some infants night awakening is more persistent and continues into older ages. However, the influence of fragmented sleep on development is poorly known. In the present study, the longitudinal relationship between fragmented sleep and psychomotor…
Descriptors: Infants, Correlation, Psychomotor Skills, Sleep
Peer reviewedKeltikangas-Jarvinen, Liisa – Journal of Youth and Adolescence, 2002
Examined the relations between aggressive problem-solving strategies and aggressive behavior and the intervening role of social acceptance in that relation in early and late adolescents. Subjects were 1,655 11- and 17-year-olds in Finland. Results show that aggressive problem-solving strategies were significantly, but not very highly, associated…
Descriptors: Adolescents, Age Differences, Aggression, Behavior Patterns
