In this issue of Cognition, Thompson and her colleagues challenge the results from a paper we published several years ago. That paper demonstrated that metacognitive difficulty or disfluency can trigger more analytical thinking as measured by accuracy on several reasoning tasks. In their experiments, Thompson et al. find evidence that people process information more deeply—but not necessarily more accurately—when they experience disfluency. These results are consistent with our original theorizing, but the authors misinterpret it as counter-evidence because they suggest that (...) accuracy is a measure of deeper processing rather than a contingent outcome of such processing. We further suggest that Thompson et al. err when they discriminate between “perceptual fluency” and “answer fluency,” the former of which is an element of the latter. Thompson et al. advance research by adding reaction time as a measure of deeper cognitive processing, but we caution against misinterpreting the meaning of accuracy. (shrink)

A balanced approach that considers human strengths and weaknesses will lead to a more flattering set of empirical findings, but will distract researchers from focusing on the mental processes that produce such findings and will diminish the practical implications of their work. Psychologists ought to be doing research that is theoretically informative and practically relevant, exactly as they are doing.