Acquisition and retention · Large-scale field dataset, preregistered lab experiments, and field experiment
Referral Contagion: Downstream Benefits of Customer Referrals
Gershon, R., & Jiang, Z. (2024). Journal of Marketing Research. https://doi.org/10.1177/00222437241257886.
Plain-English take
Conditional on purchase activity, referred customers made 31%–57% more referrals than nonreferred customers in the field data. For your marketing: Track whether acquired customers later refer others and test simple lifecycle reminders.
How much weight to give this
4.5/5 Strong design for its specific question
The 1–5 evidence-check score is a practical reading aid, not a formal peer review or a probability that a conclusion is true. It combines design strength (2 points), sample reporting (1), comparison/control clarity (1), and how much of the paper could be checked (1). Access affects how confidently this directory can assess a study, not the study's underlying quality. Blinding is reported separately because it is not relevant to every design.
An experiment is useful for causal evidence, but the accessible profile does not establish random assignment.
Large sample reported (41,200,000); size alone does not guarantee a representative sample.
Experimental comparison is described; randomization or control details need checking in the paper.
An accessible full paper or manuscript is linked, making methods easier to check.
Double-blind? Blinding is not reported in the source reviewed; that does not establish whether blinding was or was not used.
Research question
What the authors investigated
Do customers acquired through referrals themselves generate more downstream referrals, and can that behavior be increased?
Design
A large-scale customer field dataset was combined with preregistered laboratory experiments and a field experiment that reminded customers how they had joined.
Sample and setting
The publisher abstract reports a large-scale field dataset but no total sample size; the author-hosted manuscript describes data from 41.2 million customers, two preregistered lab experiments, and one field experiment.
Reported result
What the study found
Conditional on purchase activity, referred customers made 31%–57% more referrals than nonreferred customers in the field data. In a field experiment, reminding customers they joined through a referral further raised their likelihood of referring by 21% according to the publisher abstract.
This is a paraphrase of the source. Check the original paper for definitions, estimates, statistical uncertainty and analysis details.
Scope and transfer
Limitations to keep in view
The field relationships may depend on the partner firms and customer contexts; the reminder intervention is a specific treatment. Referral propensity is not evidence that a referral program is profitable after incentives and servicing costs.
Possible founder application
Track whether acquired customers later refer others and test simple lifecycle reminders. Evaluate incremental referred-customer value net of reward cost; avoid treating the reported lift as a forecast for a different product.
Evidence access
Publisher abstract and author-hosted paper
Journal of Marketing Research abstract plus author-hosted manuscript; sample detail comes from the manuscript, and the 21% result follows the publisher abstract.
If only an abstract or metadata was available, the profile is limited to claims supported there. A paper's paywall does not change its evidentiary status, but it limits what we can substantiate from accessible text.