Krzysztof Jan Bobrowski, Krzysztof Ostaszewski
Risk and protective factors associated with internalizing and externalizing mental health problems among 13-15-year-old youth
Psychiatria polska
twoyear followup data ostensibly normal sample children previously characterized number behavior problem dimensions teachers peers analyzed addition 1year followup data presented group extreme behavior children school behavior dimensions distractibility conduct problem fairly stable 2 years girls boys addition inadequacyimmaturity stable girls may mark severe behavior problems young girls behavior problems young girls predictive later achievement difficulties behavior problems boys predictive peer teacher difficulty finally teachers clinical judgement demonstrated useful indexing behavior hyperactive boys