The aim of this field experiment was to compare the effects of a special care unit (SCU) on residents with Alzheimer's disease (AD) who lived on the SCU and on traditional (integrated) nursing home units. Twenty-two subjects, 13 on the SCU and 9 on traditional integrated units were compared. Repeated measures ANOVA was used to assess differences between the two groups and within the groups over two bimonthly pretests and two bimonthly posttests. No significant differences on cognitive or functional abilities scores were evident for the groups and no significant differences were found over time. However, consistent with the prediction of the Progressively Lower Stress Threshold Model, the SCU subjects' function was better than subjects on traditional units when measured by socially accessible behaviors.
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