Characteristics of children and adolescents with mental retardation and frequent outwardly directed aggressive behavior.

Two interrelated cross-sectional studies were conducted to expand earlier findings about correlates of outwardly directed aggressive behavior in children with mental retardation. In Study 1 we compared children with mental retardation, 27 with and 23 without aggression. Aggression was best predicted by concurrent self-injurious behavior (SIB). In Study 2 we examined the likelihood that aggression was predicted by concurrent SIB and other nondestructive maladaptive behaviors in an archival cohort of 701 children younger than 21 with IQs below 70. Self-injurious behavior significantly predicted outwardly directed aggression for all children regardless of age. Additional predictors besides SIB showed only minimal improvements in model R2 values. Results were discussed in light of recent research proposing a common basis for aggression and SIB.

Crisis intervention for community-based individuals with developmental disabilities and behavioral and psychiatric disorders.

When individuals with a developmental disability experience a behavioral or psychiatric crisis, their community placement may be threatened. A model crisis intervention program for individuals with dual diagnoses was discussed and performance and outcomes of such a service for 267 children and adults reviewed. Analysis indicated that 69% of the individuals required only one crisis intervention. Of the 31% requiring two or more, nearly all were re-referred earlier than 2 years post initial crisis intervention. The central, gulf-bridging role of a crisis intervention service in a comprehensive, coordinated, community-based mental health system for dually diagnosed individuals was discussed.