Document Type


Date of Degree Completion

Winter 1972

Degree Name

Master of Science (MS)



Committee Chair

Donald Eugene Guy

Second Committee Member

Terry L. DeVietti

Third Committee Member

James G. Green


Subjects were assigned to bidimensional rule problems that contained either 5, 10, or 15 levels of intradimensional variability. The stimuli consisted of numbers and alphabetical letters. There were no performance differences by either males or females when the number of levels within each rule was increased. There was a significant difference in performance among the three rules (disjunctive, conditional, and biconditional), however, the conditional was more difficult than the biconditional which is inconsistent with earlier research.