**Manuscript and Supplements** Download [manuscript here] or view the supplement packets below: - [Included_Effects] lists each study replicated as part of the project. - [Coordinating Proposal] is an early proposal/recruitment document. - [SourceInfo] is a spreadsheet describing conditions of data collection per site. - The sub-Wiki page [here] provides more detail about this document. - [WEIRD Nations] is a spreadsheet showing the calculations that define which samples are considered WEIRD or not. - The sub-Wiki page [here] provides more detail about this document. - [Pre-registered proposal and analysis plan]. - [Post-Registration Changes] details all procedural changes made after the proposal was pre-registered. - [PoPS Supplementary Notes] details all analytic changes from the pre-registered analysis plan. - [Site Demographics] reports demographic information broken down by site. - [Max I2 Calculation] is a demonstration of the noted "I2 paradox" where samples with little visible heterogeneity can show high I2. - [ML2 Code Review] shows results from an internal review of the analysis script. : https://journals.sagepub.com/doi/10.1177/2515245918810225 : https://osf.io/ybdju/ : https://osf.io/uazdm/ : https://osf.io/uv4qx/ : https://osf.io/ux3eh/wiki/ML2%20SourceInfo%20README/ : https://osf.io/b7qrt/ : https://osf.io/ux3eh/wiki/ML2%20WEIRD%20Nations%20README/ : https://osf.io/ejcfw/ : https://osf.io/7mqba/ : https://osf.io/4rbh9/ : https://osf.io/g3bza/ : https://osf.io/frbuv/ : https://osf.io/54uef/
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