**Purpose of this page** This OSF project page describes our procedures as part of the *Perspectives on Psychological Science* Registered Replication Report of the following study: - Rand, D. G., Greene, J. D., & Nowak, M. A. (2012) Spontaneous giving and calculated greed. Nature, 489, 427–430. Please consult the official [protocol][1] and [RRR project page][2] for details of the experiment's methodology, all of the materials necessary for the project, and detailed instructions. This project page describes our implementation of this protocol, with details provided in the Implementation component. **Contributors** - Julie Novakova, Department of Philosophy and History of Science, Faculty of Science, Charles University in Prague - Petr Houdek, Department of Philosophy and History of Science, Faculty of Science, Charles University in Prague; Department of Economics, The Faculty of Social and Economic Studies, J. E. Purkyne University in Usti nad Labem - Jaroslav Flegr, Department of Philosophy and History of Science, Faculty of Science, Charles University in Prague [1]: https://osf.io/ypd78/ [2]: https://osf.io/scu2f/