“…Informant-based assessments included: (a) the Dementia Questionnaire for Mentally Retarded Persons [DMR] (Evenhuis, 1992(Evenhuis, , 1996, a questionnaire measuring changes in social and cognitive functioning suggestive of dementia, (b) Part I of the American Association on Mental Deficiency Adaptive Behavior Scale [ABS] (Nihira, Foster, Shellhaas, & Leland, 1974), an instrument measuring functional abilities, (c) the Reiss Screen for Maladaptive Behavior (Reiss & Valenti-Hein, 1994) to screen for possible depression, psychosis and behavior management problems, the symptoms of which might mimic dementia or be associated with its progression, and (d) a Life Events Questionnaire [LEQ] [G. Seltzer, personal communication], a measure of stressful life events that might increase risk for dementia or result in a temporary pseudodementia syndrome.…”