Habit Formation Hypothesis in Repayment

In Simple Words

Think of brushing your teeth every morning. Doing it every single day without interruption makes it an automatic habit, whereas taking a two-month break might make it harder to get back into the routine once you have to start again.

Research question

Lenders frequently worry that providing a grace period prevents borrowers from developing regular repayment habits, thereby increasing default rates through behavioral complacency rather than business risk.

Participants

N = 845 low-income female microfinance borrowers in Kolkata, India.

Study Design

Field RCT analyzing installment compliance dates, administrative payment logs, and initial meeting attendance across grace period and regular loan groups.

Results

Grace period and regular contract clients were equally likely to make their first payment on time (95.3% control vs 97.7% treatment) and equally likely to repay at least 50% of the loan balance (98.8% control vs 97.2% treatment), disproving habit formation disruption as the driver of higher overall default.

Takeaway

Maintain strict post-grace period installment enforcement to preserve repayment discipline once initial payments commence.

Read alongside the research

Plain-English glossary

Original explanations, informed by the references below. Examples are illustrations, not data from the studies above. The research text stays unchanged.

Randomized controlled trial

A study that uses chance, like drawing lots, to decide who receives each option being compared. Researchers compare the groups’ outcomes to estimate the effect of those options.

ExampleA lottery assigns volunteers to a training programme or a comparison group. Researchers then compare their outcomes.

GET-IT glossary · Randomized study ↗Read more about randomized controlled trial →

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