I just came across the phrase "harking" in a James C. Coyne blog:
The authors’ failure to single out one or two of these variables a priori (ahead of time) sets them up to pick-the-best hypothesizing after results are known or HARKING. We do not actually know, but there is a high risk of bias.
from: http://blogs.plos.org/mindthebrain/...dynamic-therapy-better-routine-care-anorexia/
HARKing: Hypothesizing After the Results are Known
Pers Soc Psychol Rev August 1998
Abstract
- Norbert L. Kerr
- Department of Psychology, Michigan State University
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.
Free full text at: http://www.sozialpsychologie.uni-frankfurt.de/wp-content/uploads/2010/09/kerr-1998-HARKing.pdf