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Abstract:
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"The move toward journal policy on data and code publication is indisputable. We show that increasing numbers of journals are using their publication policies to support reproducible research, facilitate data and code re-use, and enable broader communication of the output of digital scientific research. In this paper we take stock of data and code policies for 170 journals, and document how their policies have changed from June of 2011 to June 2012. We hypothesize that open data and code policies are in the process of being adopted more widely, that data policy adoption leads code policy adoption, and that open access journals would be more likely to have policies making data and code open as well. We found evidence to support our first two hypotheses, and little evidence to support the third. Of the journals in this study, 38% had a data policy, 22% had a code policy, and 66% had a supplemental materials policy as of June of 2012. This reflects a striking one year increase of 16% in the number of data policies, a 30% increase in code policies, and a 7% increase in the number of supplemental materials policies. We find that of journals with open data and code policies, they tend to adopt open data policies first and then adopt open code policies later, independently of the existence of supplemental materials policies. Data and code sharing is no longer an obscure or unconventional part of the publication process, but has entered the mainstream."
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