The D-48 and D-70 (Dominoes) Tests, which are parallel forms of a non-verbal, cross-cultural test, were administered to 82 college students and 112 high school freshmen. Criterion scores were obtained on the Otis Quick Score and grade point average for the college students, and the Iowa Test of Basic Skills for the ninth-graders. Results showed a correlation of .69 and .70 for college students and high school students respectively between the parallel forms of the test. Other results indicated equal means and standard deviations of the two tests and equal correlations with the outside criteria for both groups of subjects. Internal consistency reliability was considered adequate for both tests. The summary of results supported the parallelism of the two forms of the test. (Author)