A Twin‐Singleton Comparison of Problem Behaviour in 2‐3‐Year‐Olds

• DOI: 10.1111/j.1469-7610.1995.tb01302.x
• Publication Date: 2006-12-08T00:40:28Z
• Authors: Edwin J. C. G. va...; Hans M. Koot; Dorret I. Boomsma; Frank C. Verhulst; J. F. Orlebeke
• Keywords: Singleton; CBCL

Abstract Twin‐singleton differences in problem behaviours 2–3‐year‐olds were studied. Maternal ratings of children's obtained with the CBCL/2–3. The twin sample Consisted d 1863 pairs (456 MZ, 907 DZ), singletons consisted 420 children from general population. Results indicated that level twins was broadly comparable to singletons. Four seven syndromes showed lower scores for twins. These difference, however, small and mainly caused In tower DZ comparison MZ Pan difference could be attributed higher maternal age groups I Higher means boys found total score, Aggressive Overactive syndromes.