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Sex Differences in Left-Handedness Are Also Evident in Scandinavia and in Twins: Comment on Papadatou-Pastou, Martin, Munafo, and Jones (2008)
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Vuoksimaa, Eero; Kaprio, Jaakko – Psychological Bulletin, 2010
The lack of sex difference in left-handedness in Scandinavian countries reported by Papadatou-Pastou, Martin, Munafo, and Jones (2008) is questioned. We investigated the sex difference in left-handedness in two Finnish, one Norwegian, and one Swedish population-based sample not included in the Papadatou-Pastou et al. (2008) meta-analysis. The…
Descriptors: Handedness, Twins, Foreign Countries, Gender Differences
Fetal Origins of Child Non-Right-Handedness and Mental Health
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Rodriguez, Alina; Waldenstrom, Ulla – Journal of Child Psychology and Psychiatry, 2008
Background: Environmental risk during fetal development for non-right-handedness, an index of brain asymmetry, and its relevance for child mental health is not fully understood. Methods: A Swedish population-based prospective pregnancy-offspring cohort was followed-up when children were five years old (N = 1714). Prenatal environmental risk…
Descriptors: Handedness, Prenatal Influences, Foreign Countries, Young Children
Cognitive Performance among Left-Handers Differing in Strength of Handedness and Familial Sinistrality.
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Levander, Maria; Levander, Sten – Intelligence, 1990
Forty-eight male and 54 female left-handed junior college students in Stockholm were grouped according to familial sinistrality and strength of handedness. Performance on computerized reaction time (RT), maze, and verbal ability tests was assessed. Sex was the only factor differentiating left-handers on RT, and no factors affected verbal ability.…
Descriptors: Cognitive Ability, College Students, Comparative Testing, Family Characteristics