Data from published studies

Since 2011, we have posted links so others can download behavioral data files from our lab's published studies. As of June 2015, data are available for 25 studies by following links on our publications page.

Why granting agencies and/or journals should require data archiving

There has been a lot of attention recently to cases of fraud and distortion in published research. In the discussions of possible solutions, little has been said about the potential benefits of mandatory data archiving policies. For instance, if journals required archiving of raw data as supplementary material as part of the process of publishing an article, wouldn't that make authors less likely to massage their data analyses? While the APA and many journals have policies that authors must share data upon request, authors apparently rarely comply with such requests, even when research was published in APA journals. Reluctance to share data has been shown to be related to the number of "apparent" errors in the paper's statistical reporting (such errors often involved p values that should not have been reported as significant but were). If journals (or granting agencies) required public release of data upon publication, researchers would likely be more careful about double checking their results and better about their data management practices, making it possible to easily retrieve data from studies conducted years ago. Making data available for public download should also increase the impact of the findings and benefit the scientific community in many ways.

October, 2015 update: Apparently despite all the attention devoted to this issue in the media, rates of sharing had not improved as of 2013, when two researchers requested data from several hundred authors of APA journal papers, including us for our "Risk Preferences and Aging: The 'Certainty Effect' in Older Adults' Decision Making," published in Psychology and Aging in 2012. Having those data already posted on our webpage made responding a 30-second exercise. Without the advance set-up, it would have been a more significant time investment. And, indeed, 62% never sent their data despite APA policies that it must be made available.

Pictures used in Mather & Nesmith (2008) and Mather, Gorlick, & Nesmith (2009)

This set of 72 matched pairs of pictures (each pair has one arousing and one neutral picture; 48 pairs are neutral-negative and 24 are neutral-positive) is available in three separate zip files for research purposes.

Highly arousing negative pictures with neutral matches.
Moderately arousing negative pictures with neutral matches.
Moderately arousing positive pictures with neutral matches.

Mather, M., & Nesmith, K. (2008). Arousal-enhanced location memory for pictures. JML, 58, 449-464. PDF

Driving game used in Mather, Gorlick, & Lighthall (2009)

driving game

This 5-minute driving game provides a measure of risky decision making, as participants get points the more they drive during yellow lights, but risk losing all the points if the light turns red while they are driving. It is a modified version of the driving game described in Gardner and Steinberg (2005) that Steinberg and Sheldrick created (see citations below).

Driving game in Mac and PC versions. How to find output file

Sheldrick, R. C. (2004). Social networks and degree of psychopathy among adolescent offenders (Doctoral dissertation, Temple University, 1990). Dissertation Abstracts International, 65(3-B), 1564.

Gardner, M., & Steinberg, L. (2005). Peer influence on risk-taking, risk preference, and risky decision-making in adolescence and adulthood: An experimental study. Developmental Psychology, 41 , 625-635.

Mather, M., Gorlick, M. A., & Lighthall, N. R. (2009). To brake or accelerate when the light turns yellow? Stress reduces older adults' risk taking in a driving game. Psychological Science, 20, 174-176. PDF