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Sunday, May 13, 2012

Measuring the Prevalence of Questionable Research Practices With Incentives for Truth Telling

*Psychological Science* has scheduled an article for publication in a future issue of the journal: "Measuring the Prevalence of Questionable Research Practices With Incentives for Truth Telling."

The authors are Leslie K. John of Harvard University, George Loewenstein of Carnegie Mellon University, & Drazen Prelec of the Massachusetts Institute of Technology.

Here is the abstract:
Cases of clear scientific misconduct have received significant media attention recently, but less flagrantly questionable research practices may be more prevalent and, ultimately, more damaging to the academic enterprise. Using an anonymous elicitation format supplemented by incentives for honest reporting, we surveyed over 2,000 psychologists about their involvement in questionable research practices. The impact of truth-telling incentives on self-admissions of questionable research practices was positive, and this impact was greater for practices that respondents judged to be less defensible. Combining three different estimation methods, we found that the percentage of respondents who have engaged in questionable practices was surprisingly high. This finding suggests that some questionable practices may constitute the prevailing research norm.
Here's how the article starts:

Although cases of overt scientific misconduct have received significant media attention recently (Altman, 2006; Deer, 2011; Steneck, 2002, 2006), exploitation of the gray area of acceptable practice is certainly much more prevalent, and may be more damaging to the academic enterprise in the long run, than outright fraud.

Questionable research practices (QRPs), such as excluding data points on the basis of post hoc criteria, can spuriously increase the likelihood of finding evidence in support of a hypothesis.

Just how dramatic these effects can be was demonstrated by Simmons, Nelson, and Simonsohn (2011) in a series of experiments and simulations that showed how greatly QRPs increase the likelihood of finding support for a false hypothesis.

QRPs are the steroids of scientific competition, artificially enhancing performance and producing a kind of arms race in which researchers who strictly play by the rules are at a competitive disadvantage.

QRPs, by nature of the very fact that they are often questionable as opposed to blatantly improper, also offer considerable latitude for rationalization and self-deception.

Concerns over QRPs have been mounting (Crocker, 2011; Lacetera & Zirulia, 2011; Marshall, 2000; Sovacool, 2008; Sterba, 2006; Wicherts, 2011), and several studies--many of which have focused on medical research--have assessed their prevalence (Gardner, Lidz, & Hartwig, 2005; Geggie, 2001; Henry et al., 2005; List, Bailey, Euzent, & Martin, 2001; Martinson, Anderson, & de Vries, 2005; Swazey, Anderson, & Louis, 1993).

In the study reported here, we measured the percentage of psychologists who have engaged in QRPs.

As with any unethical or socially stigmatized behavior, self-reported survey data are likely to underrepresent true prevalence.

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The study "surveyed over 2,000 psychologists about their involvement in questionable research practices."

The article reports that the findings "point to the same conclusion: A surprisingly high percentage of psychologists admit to having engaged in QRPs."

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Most of the respondents in our study believed in the integrity of their own research and judged practices they had engaged in to be acceptable.

However, given publication pressures and professional ambitions, the inherent ambiguity of the defensibility of "questionable" research practices, and the well-documented ubiquity of motivated reasoning (Kunda, 1990), researchers may not be in the best position to judge the defensibility of their own behavior.

This could in part explain why the most egregious practices in our survey (e.g., falsifying data) appear to be less common than the relatively less questionable ones (e.g., failing to report all of a study's conditions).

It is easier to generate a post hoc explanation to justify removing nuisance data points than it is to justify outright data falsification, even though both practices produce similar consequences.

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Another excerpt: "Given the findings of our study, it comes as no surprise that many researchers have expressed concerns over failures to replicate published results (Bower & Mayer, 1985; Crabbe, Wahlsten, & Dudek, 1999; Doyen, Klein, Pichon, & Cleeremans, 2012, Enserink, 1999; Galak, LeBoeuf, Nelson, & Simmons, 2012; Ioannidis, 2005a, 2005b; Palmer, 2000; Steele, Bass, & Crook, 1999)."

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More generally, the prevalence of QRPs raises questions about the credibility of research findings and threatens research integrity by producing unrealistically elegant results that may be difficult to match without engaging in such practices oneself.

This can lead to a "race to the bottom," with questionable research begetting even more questionable research.

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Thanks to Ken Pope for this information.

The abstract and article are here.