6Jensen PS, Bloedau L, DeGroot J, et al. Children at risk: I. Risk factors and child symptomatology[J]. J Am Acad Child Adolesc Psychiatry, 1990, 29(1): 51.
7Muris P, Merckelbach H, Walczak S. Aggression and threat perception abnormalities in children with learning and behavior problems[J]. Child Psychiatry Hum Dev, 2002, 33 (2) : 147.
9Caspi A, Moffitt TE, Morgan J, et al. Maternal ex- pressed emotion predicts children's antisocial behavior prob- lems., using monozygotic twin differences to identify environ mental effects on behavioral development[J]. Dev Psychol, 2004, 40(2): 149.
10Nicolson R, Lenane M, Singaracharlu S, et al. Premor- bid speech and language impairments in childhood-onset schizophrenia : association with risk factors[J]. Am J Psychi- atry,2000,157(5) :794.