"The test-retest reliability of n-achievement (a measure of achievement motivation) and its relationship to certain other selected variables has been computed on 169 students in How to Study classes at the University of Minnesota. A test-retest reliability of .26 after a nine-week interval casts doubt on the stability as well as the possible validity of the measure. The correlations of n-achievement with an achievement examination in the course and with two other personality measures which correlate with academic success show no consistently positive or negative relationships. It is also independent of scholastic aptitude as measured by the ACE." (PsycINFO Database Record (c) 2006 APA, all rights reserved)