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Confrontation naming in the elderly: the Build-up Picture Test as an aid to differentiating normals from subjects with dementia.

This paper reports the results of a study in which the Build-up Picture Test (BUPT) was given to three groups of elderly subjects with 15 subjects in each group: independent, dependent and those with probable senile dementia of the Alzheimer type (SDAT). The BUPT is a task designed to combine confrontation and generative naming, incorporating priming, cueing and latency aspects to facilitate responses. It involves presentation of degraded line drawings of objects, built up in stages to black and white photographs of the objects. Results showed the scores by the probable SDAT subjects to be highly significant at the 1.00 level (P = 0.0000). Analysis of scores showed better than expected responses from the probable SDAT subjects to representations of familiar objects with simple outline shapes. The implications for differential diagnosis are discussed.