Our field experiment on code sharing behavior in the social sciences has been published in PLOS One (co-authored by @laura_schaechtele and Andreas Schneck).
Read the full article open access https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0289380
(Main take-aways in the thread below)
1. Code sharing remains the exception rather than the rule among social scientists. Despite multiple requests, only 385 of 1028 authors shared their code with us (37.5%).
2. Micro interventions perform rather poorly in nudging researchers towards sharing code. If anything, mentioning the „replication crisis“ in a code request might yield slightly higher code returns (contrary to our hypothesis).
3. Code management seems to be a considerable problem among social scientists. To ensure the availability of research code, large-scale institutional solutions are desperately needed.
@dkraehmer @laura_schaechtele This is largely aligned with our findings on sharing of materials on biology. https://osf.io/collections/rpcb/discover
Given the high nonresponse rate, I feel like a good control would be simply asking for acknowledgement of receipt without asking for sharing in a subset of emails sent.