This study used an independent t-test & a oneway ANOVA to examine the performance by well elderly of a parquetry block asssembly task that occupational therapists use to treat constructional deficits in adults. Forty-eight right handed well elderly were tested. Independent variables were subjects' sex, presence or absence of color on the model design card, and amount of detail on the model design card. Dependent variables were speed and error of design construction. Results of this study showed that the subjects' total time & error scores were not significantly related to their gender and the presence or absence of card color. But subjects' total time scores were significantly related to the amount of detail on the design card but not to error scores. This information can be used to generate clinical performance criteria and graded levels of difficulty for this modality.