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OBJECTIVE When there exists no single source of information (informant) to validly measure a characteristic, it is typically recommended that data from multiple informants be used. In psychiatric(More)
OBJECTIVE To present the conceptual and methodological backgrounds for development of the MacArthur Assessment Battery for Middle Childhood and one of its constituent instruments, the MacArthur(More)
BACKGROUND Early childhood antisocial behaviour is a strong prognostic indicator for poor adult mental health. Thus, information about its etiology is needed. Genetic etiology is unknown because most(More)