This article will discuss briefly the definitions of behavior problems and behavioral interventions. Next, the following series of intervention points related to the quality of life of patients with Alzheimer's disease (AD) will be considered: cognition, activities of daily living (ADLs), agitation, social behavior, nonsocial positive behaviors, and affect states. The article concludes with a discussion of three areas dealing with environmental aspects of AD care: the design of environments, effects of AD on social context, and AD in planned housing.