Related Experiment Video

Updated: Jul 19, 2026

Assessing the Coherence of Parents' Short Narratives Regarding their Child Using the Five-Minute Speech Sample Procedure
07:56

Assessing the Coherence of Parents' Short Narratives Regarding their Child Using the Five-Minute Speech Sample Procedure

Published on: September 19, 2019

Consistency and change in mothers' behavior toward young siblings

J F Dunn, R Plomin, D Daniels

    Child Development
    |April 1, 1986
    PubMed

    Siblings differ markedly in behavioral development, and it has been suggested that differential maternal treatment may contribute significantly to these differences. The question of how consistently mothers treat their different children was examined in a study of 45 sibling pairs from the Colorado Adoption Project, in which each child at 24 months of age was videotaped at home with the mother. The results showed mothers to be consistent in affection and verbal responsiveness but to differ in their controlling behavior toward the 2 siblings. Comparison of the same mother's behavior to the 2 siblings at 12 months and at 24 months showed little stability in maternal behavior to the same child over this age period.

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