HARKing: Hypothesizing After the Results are Known
- 1 August 1998
- journal article
- Published by SAGE Publications in Personality and Social Psychology Review
- Vol. 2 (3) , 196-217
- https://doi.org/10.1207/s15327957pspr0203_4
Abstract
This article considers a practice in scientific communication termed HARKing (Hypothesizing After the Results are Known). HARKing is defined as presenting a post hoc hypothesis (i.e., one based on or informed by one's results) in one's research report as if it were, in fact, an a priori hypotheses. Several forms of HARKing are identified and survey data are presented that suggests that at least some forms of HARKing are widely practiced and widely seen as inappropriate. I identify several reasons why scientists might HARK. Then I discuss several reasons why scientists ought not to HARK. It is conceded that the question of whether HARKing's costs exceed its benefits is a complex one that ought to be addressed through research, open discussion, and debate. To help stimulate such discussion (and for those such as myself who suspect that HARKing's costs do exceed its benefits), I conclude the article with some suggestions for deterring HARKing.Keywords
This publication has 38 references indexed in Scilit:
- Ethics for psychologists: A commentary on the APA Ethics Code.Published by American Psychological Association (APA) ,1994
- Hypothesized and Confounded Explanations in Theory Tests: A Bayesian AnalysisJournal of Consumer Research, 1992
- Eliminating the hindsight bias.Journal of Applied Psychology, 1988
- Reduction of hindsight bias by restoration of foresight perspective: Effectiveness of foresight-encoding and hindsight-retrieval strategiesOrganizational Behavior and Human Decision Processes, 1987
- The moderator–mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations.Journal of Personality and Social Psychology, 1986
- Hindsight bias among physicians weighing the likelihood of diagnoses.Journal of Applied Psychology, 1981
- Social DilemmasAnnual Review of Psychology, 1980
- Perceived informativeness of facts.Journal of Experimental Psychology: Human Perception and Performance, 1977
- Hindsight is not equal to foresight: The effect of outcome knowledge on judgment under uncertainty.Journal of Experimental Psychology: Human Perception and Performance, 1975
- That's Interesting!Philosophy of the Social Sciences, 1971