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Volbrecht, Michele M.; Lemery-Chalfant, Kathryn; Aksan, Nazan; Zahn-Waxler, Carolyn; Goldsmith, H. Hill – Journal of Genetic Psychology, 2007
Within a sample of 584 twins aged 12 to 25 months (292 pairs) studied longitudinally, positive affect measured through two laboratory pleasure episodes and maternal report at 12 and 22 months significantly predicted empathy-related helping and hypothesis testing assessed between 19 and 25 months. Girls showed significantly more concern than did…
Descriptors: Gender Differences, Parent Child Relationship, Genetics, Hypothesis Testing
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Else-Quest, Nicole M.; Hyde, Janet Shibley; Goldsmith, H. Hill; Van Hulle, Carol A. – Psychological Bulletin, 2006
The authors used meta-analytical techniques to estimate the magnitude of gender differences in mean level and variability of 35 dimensions and 3 factors of temperament in children ages 3 months to 13 years. Effortful control showed a large difference favoring girls and the dimensions within that factor (e.g., inhibitory control: d = -0.41,…
Descriptors: Personality Traits, Gender Differences, Meta Analysis, Children