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Bentley, Mary Jane; Lin, Haiqun; Fernandez, Thomas V.; Lee, Maria; Yrigollen, Carolyn M.; Pakstis, Andrew J.; Katsovich, Liliya; Olds, David L.; Grigorenko, Elena L.; Leckman, James F. – Journal of Child Psychology and Psychiatry, 2013
Objective: The aim of this study was to determine if a latent variable approach might be useful in identifying shared variance across genetic risk alleles that is associated with antisocial behaviour at age 15 years. Methods: Using a conventional latent variable approach, we derived an antisocial phenotype in 328 adolescents utilizing data from a…
Descriptors: Risk, Genetics, Identification, Antisocial Behavior
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Goelman, Hillel; Forer, Barry; Kershaw, Paul; Doherty, Gillian; Lero, Donna; LaGrange, Annette – Early Childhood Research Quarterly, 2006
This paper reports on the design, methodology, and results of a study of quality in 326 classrooms in 239 Canadian child care centers. This study, the largest and most extensive ever undertaken in Canada, used the Caregiver Interaction Scale (CIS) to rate the adult-child interactions in the classrooms and the Infant-Toddler Environment Rating…
Descriptors: Foreign Countries, Wages, Questionnaires, Public Policy