Abstract
To investigate the test-retest effects in university students, the Y-G Personality Inventory was administered twice with an interval of one week. The results show that the test-retest effects generally took place, but the magnitude of the effects was less in university students than in elementary and junior high school pupils in the previous study. An other purpose was to see if the test-retest effects of a test on a similar test would occur. For this purpose, subjects responded to spilt-half items in the Maudsley Personality Inventory the first time. After a week or a month, the complete Inventory was administered to the same subjects. But the test-retest effects of the L scale were not clear.
