The purpose of this study was to obtain normative data and comparing cognitive abilities of patients with stroke and normal population by administering Lowenstein Occupational Therapy Cognitive Assessment (LOTCA). The subjects were 31 patients with stroke and 19 adults in a good health. The results were as follows: 1.　The experimental group received statistically lower scores than the control group in all items except for object identification, shape identification and copying geometric forms. 2.　There was no significant difference in analysis of items based on affected side. 3.　There was a significant difference in the relationship between educational background and visuomotor organization and thinking operation. 4.　There was a significant difference in the relationship between treatment period and visuomotor organization. 5.　There was no significant difference in the relationship between LOTCA scores and age and onset of the disease. The result shows that there was a significant difference in LOTCA scores between the experimental group and control group. These data are expected to be used as a baseline.