Abstract

The present study tried to know the characteristics of BGT performance on depression and to distinguish from other diagnostic groups. The BGT copy phase of 50 depressed patients were analyzed. 50 college students and 50 brain-damaged patients were used control groups. Hurt scoring method, Psychopathological Scale and Adience-abience Scale, was adapted to score data. There were significant difference on HABGT's total score among three groups. In the most items, the depressed patients were scored secondly among three groups except some items. But the result that only 20% of depressed patients was correctely classified when use scale's total score showed that the classification by total score was not effective. In order to establish more effective norm, discriminant analysis was performed and two discriminant function were producted. Function I which differentiate college students and brain-damaged patients was characterized fragmentation, perceptual rotation, change in angulation and curvature difficulty. And function II which differentiate depressed patients and other two groups was characterized perceptual rotation, fragmentation, change in angulation and closure difficulty. A discriminant function using some items as prediction variables showed that 83.00% is successful in classifying the three groups used for criterion while 78.00% is successful in classifying the three groups used for cross validation.