Personalized Loan Repayment SMS Reminders

Summary

Of the 12 message variants tested, the single most effective element was including the loan officer's name rather than the borrower's name—a counterintuitive result. Mentioning the loan officer appears to activate accountability to a real person (the lender relationship) rather than a generic institution. The much-discussed gain/loss framing that dominates behavioral economics theory had no statistically significant effect in this context. The study is a useful corrective against assuming standard nudge findings generalize across cultural and institutional contexts.

Research question

"What SMS reminder format most effectively increases micro-loan repayment?"

Methodology

Result

Mixed

SMS mentioning loan officer's name substantially improved repayment vs. client name or control; no significant gain/loss framing effect; timing mattered less than personalization

Evidence strength

Strong

Randomized controlled trial with large sample.

Replication status

Partially replicated