This page contains all the collected study materials and instructions from authors that we have compiled. We also include any comments from other contributors or follow up instructions that we have learned since the beginning of the project. Click "read more" below or choose the "Wiki" option above for further information. For technical problems, please contact OSF help desk (support@osf.io). For questions or information about the studies contact either either Jordan Wagge (jordan.wagge@avila.edu) or Lili Lazarevic (ljiljana.lazarevic@f.bg.ac.rs) so that the materials can be made available on this website. **Abstract** Motivation has long been recognized as an important component of how people both differ from, and are similar to, each other. The current research applies the biologically-grounded fundamental social motives framework, which assumes that human motivational systems are functionally shaped to manage the major costs and benefits of social life, to understand individual differences in social motives. Using the Fundamental Social Motives Inventory, we explore the relations among the different fundamental social motives of self-protection, disease avoidance, affiliation, status, mate seeking, mate retention, and kin care; the relationships of the fundamental social motives to other individual difference and personality measures including the Big Five personality traits; the extent to which fundamental social motives are linked to recent life experiences; and the extent to which life history variables (e.g., age, sex, childhood environment) predict individual differences in the fundamental social motives. Results suggest that the fundamental social motives are a powerful lens through which to examine individual differences: They are grounded in theory, have explanatory value beyond that of the Big Five personality traits, and vary meaningfully with a number of life history variables. A fundamental social motives approach provides a generative framework for considering the meaning and implications of individual differences in social motivation. **Materials** The original paper is [here][1]. In the focal study of the original paper, the total sample was divided in three separate samples, and in each sample respondents provided answers on a subset of measure. However, for all samples, participants first responded to items assessing their relationship status and parent status, so that the mate retention and kin care child scales could be presented only to people in relationships and people with children, respectively. In line with the suggestions from the original authors, CREP teams focus on the measures collected in Sample A of the original study. The original materials for Sample A are [here][2]. **Sample** To obtain a CREP completion certificate the minimum N for this project is 100. [1]: https://psychology.uiowa.edu/sites/psychology.uiowa.edu/files/groups/neel/files/FundamentalSocialMotivesJPSPinpress.pdf [2]: https://osf.io/437f6/