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Bolton, Patrick F.; Golding, Jean; Emond, Alan; Steer, Colin D. – Journal of the American Academy of Child & Adolescent Psychiatry, 2012
Objective: To chart the emergence of precursors and early signs of autism spectrum disorder (ASD) and autistic traits in the Avon Longitudinal Study of Parents and Children, a prospective longitudinal cohort study of the surviving offspring of 14,541 pregnant women from southwestern England with an expected delivery date between April 1991 and…
Descriptors: Autism, Screening Tests, Pregnancy, Infants
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Jacobson, Joseph L.; And Others – Developmental Psychology, 1984
Examines the psychometric properties of two procedures for reducing data from the Brazelton Neonatal Behavioral Assessment Scale: factor and cluster analysis. The sample consisted of 85 male and 77 female newborns. (RH)
Descriptors: Cluster Analysis, Comparative Analysis, Data Analysis, Factor Analysis
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Green, James A.; Gustafson, Gwen E.; McGhie, Anne C. – Child Development, 1998
Examined differences in acoustic characteristics of cries, both early and late, within a prolonged crying bout. Results indicated that late cries appeared to result from a smaller number of factors than did early cries. Results support notions that crying bouts settle into a regular cry with acoustic features matching a theoretical model of cry…
Descriptors: Acoustics, Comparative Analysis, Crying, Factor Analysis