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. Contact Mark Brandt (m.j.brandt@tilburguniversity.edu) so that the materials can be made available on this website. **Abstract** The Gallup World Poll, the first representative sample of planet Earth, was used to explore the reasons why happiness is associated with higher income, including the meeting of basic needs, fulfillment of psychological needs, increasing satisfaction with one's standard of living, and public goods. Across the globe, the association of log income with subjective well-being was linear but convex with raw income, indicating the declining marginal effects of income on subjective well-being. Income was a moderately strong predictor of life evaluation but a much weaker predictor of positive and negative feelings. Possessing luxury conveniences and satisfaction with standard of living were also strong predictors of life evaluation. Although the meeting of basic and psychological needs mediated the effects of income on life evaluation to some degree, the strongest mediation was provided by standard of living and ownership of conveniences. In contrast, feelings were most associated with the fulfillment of psychological needs: learning, autonomy, using one's skills, respect, and the ability to count on others in an emergency. Thus, two separate types of prosperity—economic and social psychological—best predict different types of well-being. **Notes from CREP Team** Because this study is a large cross-country study, no one is expected to replicate the study in full. We suggest determining what the results suggest the relationships are in your own country or region (i.e., in the US we will accept replications that survey from their local area using traditional survey methods.). Then, conduct the study within your own country/region/city and use the predicted results to evaluate the the replication results compared to the original results. Additionally, participants can be recruited via email or through face to face measures. ***[DIRECT+PLUS opportunity][1]*** -- Jordan Wagge and Jon Grahe are organizing a [Direct+Plus CREP replication][2] of this study to test a new social status measure. See more details here. [1]: https://osf.io/ar5fc/ [2]: https://osf.io/ar5fc/