3.3. Hypotheses and Deviation from Pre-Registration
We pre-registered two main predictions. First, we pre-registered that children’s reported happiness would increase from pre-intervention to post-intervention. Critically, we predicted that this increase in happiness would be greatest for volunteers assigned to the Second, we pre-registered our prediction that children would be more willing to volunteer at C2C again when selecting items for a similar (vs. dissimilar) recipient and that this would depend upon condition assignment, post-intervention happiness, and/or indices of demographic similarity between the participant and recipient (i.e., age, gender). However, upon examination of the data, 99% of participants (