<h3>Does the opportunity to signal open practices lead to increased accessibility of data and materials?</h3> In January 2014, <em>Psychological Science</em> adopted [badges][1] to acknowledge open practices, offering authors the opportunity to indicate the availability of open data and materials accompanying published articles. The present research evaluates the effect that this signaling opportunity has had on the availability of data and materials. We will code all articles from January 2012 - May 2015 issues of <em>Psychological Science</em> to determine whether they (a) indicated that data and/or materials were available, and (b) if those data or materials could be accessed freely. For comparison, we will code all issues from the same time period for four journals in the same discipline that did not offer signals of open practices: <em>Journal of Personality and Social Psychology</em>, <em>Journal of Experimental Psychology: Learning, Memory, and Cognition</em>, <em>Developmental Psychology</em>, and <em>Clinical Psychological Science</em>. Through this investigation, we expect to learn about the impact of badges on the rate of data and material sharing. [1]: https://osf.io/tvyxz/wiki/home/