**READ ME**
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Welcome to this OSF project!
This project gives an overview of our continuous Bayesian meta-analysis on spillover effects of effective interventions in the environmental domain.
**About the meta-analysis**
The meta-analysis investigated spillover effects of effective interventions on sustainable intentions and behaviors. It examined the type of non-targeted outcome (intentions vs. behaviors), autonomy support, rationale provision, financial (dis)incentives, intervention goal, research setting, and sample type as potential moderators.
The meta-analysis was conducted on April 20, 2020 and updated on October 29, 2020.
Lead researcher: Sandra J. Geiger
Other researchers: Cameron Brick, Ladislas Nalborczyk, Anna Bosshard, Nils B. Jostmann
**Files in this repository**
(0) pre-registration (`PRISMAProtocol_Spillover_18042020.pdf`) and addendum (`PRISMAProtocol_Spillover_Addendum_210621.pdf`)
(1) data
- a dataset with the extracted non-aggregated effect sizes (`Data_NonAggregated.csv` and `Data_NonAggregated.RData`)
- a dataset with the aggregated effect sizes (`Data_Aggregated.csv` and `Data_Aggregated.RData`) such that each intervention yielded only one effect size for intentions and behaviors, respectively
- a dataset with the descriptive statistics of each study (`Descriptives.csv`)
(2) analysis
- analysis script (`Analysis.Rmd`)
- models for the main analysis (`bmod.rds`, `bmod_H1.rds`, `bmod_H2.rds`, `bmod_H3a.rds`, `bmod_H3b.rds`, `bmod_H4a.rds`, `bmod_H4b.rds`, `bmod_H5.rds`, `bmod_RQ2.rds`, `bmod_RQ3a.rds`, `bmod_RQ3b.rds`), the sensitivity analysis (`bmod_0s.rds`, `bmod_1s.rds`), and the forest plot (`bmod_forest.rds`)
(3) figures
- the forest plot (`forestplot.pdf`)
- the contour-enhanced funnel plot (`contour_funnel.svg`) and the sunset funnel plots (`sunset_a.svg`and `sunset_b.svg`)
- the priors for the overall effect size, the moderators, and the heterogeneity (`priors.svg`)
- the posteriors for the type of non-targeted behavior (`posterior_H1.svg`), autonomy support (`posterior_H2.svg`), rationale provision (`posterior_H3a.svg`and `posterior_H3b.svg`), financial (dis)incentives (`posterior_H4a.svg`and `posterior_H4b.svg`), goals (`posterior_H5.svg`), research setting (`posterior_RQ2.svg`), and sample type (`posterior_RQ3a.svg`and `posterior_RQ3b.svg`)
- probability wheels (`pie_RQ1a.svg`and `pie_RQ1b.svg`)
- visualization of the effect on intentions (d = 0.15; `null_effect_viz.svg`)
(4) preprint (`Preprint_Spillover.pdf`)
We encourage you to contribute to this continuous meta-analysis by sending us data that has not yet been included to update this meta-analysis in the future.
**Last updated**: September 27, 2021
