**Summary of deviations from the pre-registered analysis plan (JSP paper)**
This documentation supports our paper published in the Journal of Social Psychology.
Our paper (https://doi.org/10.1080/00224545.2017.1412932) examines how the need for safety influences attitudes towards guns on campus. The data were collected as part of a larger study: Attitudes Towards Guns at Florida Universities.
In the interest of transparency, we describe three ways in which we deviated from the analysis plan that we pre-registered as part of the larger project (described in the registration on this project page: https://osf.io/e76fv/register/565fb3678c5e4a66b5582f67).
1. After submitting the preregistration, but before we began data analysis, we realized that it was more appropriate to distinguish between three groups (non-owners of guns, protection gun owners, non-protection owners) rather than two groups (non-owners of guns, gun owners). All analyses we report distinguish between three groups.
2. We preregistered the hypotheses and data analysis section, but afterwards a statistics colleague suggested that our plan for dealing with outliers (data transformation) was not wise. He convinced us to log-transform rather than Windsorize the data.
3. We proposed some hypotheses and analyses in preregistration that are not included in this paper. Some appear in a second paper published in the Journal of Threat Assessment and Management. http://dx.doi.org/10.1037/tam0000097
4. Other hypotheses and analyses comprise a third paper that is under construction. See the specific project page for each of the papers listed under the “components” section of the overview page (Attitudes Towards Guns at Florida Universities: https://osf.io/txa5j/)
*Full explanation of deviations from the pre-registered analysis plan:*
https://osf.io/yz58f/
**Disclosure of Open Data and Materials**
All data and materials needed to reproduce the results reported in the forthcoming JSP paper “Gun Attitudes on Campus: United and Divided by Safety Needs” appear here: https://osf.io/txa5j/. See the “Data & codebook” folder for data files and a list of variable names, see “UFGun2016 Full Survey Items” for the full text of all survey items, and see the “GunSafety syntax” folder for relevant SPSS and SAS syntax.
