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A Critique of "Obstetrical Pain-relieving Drugs as Predictors of Infant Behavior Variability"
Peer reviewed Peer reviewed
Federman, Edward J.; Yang, Raymond K. – Child Development, 1976
This article is a critique of a study which concluded that there is a relationship between the use of obstetrical drugs and the behavior of infants during the first month of life. (BRT)
Descriptors: Data Analysis, Infant Behavior, Neonates, Predictor Variables
Neonatal Precursors of Infant Behavior.
Peer reviewed Peer reviewed
Yang, Raymond K.; Moss, Howard A. – Developmental Psychology, 1978
Ninety-two clinically normal infants (48 male, 44 female) were tested at 2 and 90 days of age to examine the continuity of newborn behavior through early infancy across a broad range of behaviors. (MP)
Descriptors: Behavior Development, Factor Analysis, Infant Behavior, Infants
The Characterization of Neonatal Behavior: A Dimensional Analysis
Peer reviewed Peer reviewed
Yang, Raymond K.; And Others – Developmental Psychology, 1976
Measures of active sleep, quiet sleep, sucking, crying, body size and gestational age were factor analyzed for 137 normal newborns at 2 days of age. The results yielded 3 stable factors: reactivity-irritability, maturity, and reflexive and discriminative sucking. (JMB)
Descriptors: Behavior Patterns, Body Weight, Discrimination Learning, Factor Analysis
A Study of the "Inversion of Intensity" between Newborn and Preschool-Age Behavior
Peer reviewed Peer reviewed
Yang, Raymond K.; Halverson, Charles F., Jr. – Child Development, 1976
To test the inversion of intensity interpretation based on negative relations between newborn and pre-school intensity behaviors, 106 normal children were examined at the neonatal and pre-school periods. Interpretations of intensity behaviors at both periods and their longitudinal relations are discussed. (Author/SB)
Descriptors: Heart Rate, Infant Behavior, Infants, Longitudinal Studies