Cash transfers in general appear to be more effective than in-kind transfers or vouchers at improving a range of outcomes, including decreasing monetary poverty, improving health and nutrition, and increasing food security, across diverse country contexts, program objectives, and design features. However, identifying a superior modality is challenging due to the heterogeneity in context, program design, and objectives of the studies reviewed, despite evidence generally favoring the effectiveness of cash transfers and acknowledging the enhanced effectiveness of a combination of modalities, referred to as cash plus, in specific cases.