Reasoning ability is (little more than) working-memory capacity?!

This paper is concerned with the relationship between two central constructs—reasoning ability and working-memory capacity—which arise from two distinct bodies of literature on individual differences in cognition, the psychometric and the information-processing, respectively. In four separate studies (N = 723, 412, 415, and 594), we assessed reasoning ability using various tests from the psychometric literature, and working-memory capacity using...