TEST-RETEST RESULTS FOR THE ECAT BATTERY

To determine reliabilities and practice effects for the Enhanced Compu ter-Administered Test battery, the tests were administered twice to a sample of 313 high school and junior college students (223 men and 90 women). The test-retest interval was either 4 or 5 weeks, depending on the test site. The main results were (a) statistically significant pr actice effects for all tests except Assembling Objects, although some of these score gains may not be of practical significance; (b) reliabi lities ranging from a low of .75 to a high of .91; and (c) relatively lower scores for women on all psychomotor tests and certain spatial te sts.