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Holodynski, Manfred; Seeger, Dorothee – Developmental Psychology, 2019
For research on emotional development, defining emotions as psychological systems of appraisals, expressions, body reactions, and subjective feelings in all phases of ontogenesis raises tricky methodological issues. How can we measure single emotions when appraisals and feelings cannot be assessed from outside, when expressions do not seem to be…
Descriptors: Emotional Development, Affective Behavior, Psychological Patterns, Neonates
Stern, Jessica A.; Fraley, R. Chris; Jones, Jason D.; Gross, Jacquelyn T.; Shaver, Phillip R.; Cassidy, Jude – Developmental Psychology, 2018
The first months after becoming a new parent are a unique and important period in human development. Despite substantial research on the many social and biological changes that occur during the first months of parenthood, little is known about changes in mothers' attachment. The present study examines developmental stability and change in…
Descriptors: Attachment Behavior, Mothers, Adult Development, Economically Disadvantaged

Smith, Barbara A.; And Others – Developmental Psychology, 1992
This study of healthy 39-week-old infants, so-called term infants, and chronically stressed 42-week-old infants, so-called postmature infants, showed that sucrose was extremely effective in calming term infants but less effective in calming postmature infants. Results supported the hypothesis that sucrose engages an opioid system in infants. (BG)
Descriptors: Arousal Patterns, Comparative Analysis, Crying, Experimental Psychology

Blass, Elliott M.; Smith, Barbara A. – Developmental Psychology, 1992
The potency of different sugars as calming agents in human infants was investigated in 2 experiments with 40 infants. Sucrose and fructose were equally effective calming agents, whereas glucose was less effective. Results indicate that the calming effects of milk lie in components other than its sugar. (LB)
Descriptors: Arousal Patterns, Comparative Analysis, Crying, Experimental Psychology