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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 reviewedDeets, Allyn C. – Developmental Psychology, 1974
Descriptors: Animal Behavior, Behavior Patterns, Infant Behavior, Peer Relationship
Peer reviewedMoore, Ginger A.; Cohn, Jeffrey F.; Campbell, Susan B. – Developmental Psychology, 1997
Observed face-to-face interactions between 39 mothers and their first and second-born two-month olds to evaluate within-family differences in maternal affective behavior toward siblings. Found that mothers were more positive with second-borns than firstborns, and second-borns were more positive than firstborns. Siblings' affective behaviors were…
Descriptors: Affective Behavior, Behavior Change, Behavior Patterns, Birth Order
