Behavioral Interventions to Promote Savings among Low-Income Populations

This protocol registers a systematic review examining the causal effects of behaviorally informed interventions on saving behavior among low-income populations. The review will search Scopus, Web of Science (WoS Core Collection), and EconLit (via EBSCOhost) for studies published between 2015 and 2025. Eligible studies must employ a causal identification strategy (RCT, field experiment, quasi-experiment, or natural experiment) and report at least one quantitative saving outcome. Screening will be conducted by the primary reviewer with a 15% random subsample independently verified; inter-rater consistency will be assessed using Cohen's kappa. Risk of bias will be evaluated using the Cochrane RoB 2 tool for RCTs and ROBINS-I for quasi-experimental designs, with overall evidence quality assessed via the GRADE framework. The primary synthesis will be narrative, organized by intervention type; a quantitative meta-analysis may be conducted if a sufficient number of homogeneous studies are identified. Results will be reported in accordance with PRISMA 2020. This review is also submitted for registration in PROSPERO.