Results are presented of a study examining the Test of Integrated Process Skills (TIPS) and the Tobin and Capie Test of Logical Thinking (TOLT). Each of the two tests was analyzed to provide five subtest and total test scores, which were then correlated to examine relationships between broad measures of process skill and logical thinking ability and facets of each ability. Results include the finding that formal thinking and process skill abilities are highly interrelated. Implications for further research are examined. (CS)