Pricing and product adoption · Quasi-experimental customer-level analysis with heterogeneous treatment effects
The Impact of Subscription Programs on Customer Purchases
Iyengar, R., Park, Y.-H., & Yu, Q. (2022). Journal of Marketing Research, 59(6), 1101–1117.
Plain-English take
Subscription increased customer purchases, with economically meaningful and persistent effects that varied across customers. For your marketing: When studying a paid plan or membership, distinguish benefit-driven usage from behavioral effects of the upfront commitment.
How much weight to give this
3.5/5 Useful evidence with meaningful caveats
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.
A quasi-experimental design can support causal claims if its assumptions hold.
A usable sample size is not stated in the profile's accessible source.
Nonrandom comparison; causal interpretation depends on the design assumptions.
This profile could be checked against an abstract or metadata, not the full paper.
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
How does paying an upfront fee to join a subscription program affect members' subsequent purchases?
Design
The authors combine a difference-in-differences approach with generalized random forests to compare subscription members with similar nonmembers and estimate heterogeneous effects.
Sample and setting
Members and nonmembers of a retailer or marketplace subscription program; the abstract does not identify the firm or provide sample size.
Reported result
What the study found
Subscription increased customer purchases, with economically meaningful and persistent effects that varied across customers. The authors attribute about one-third of the purchase effect to program benefits and the remaining two-thirds to a noneconomic effect consistent with sunk-cost behavior.
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 evidence concerns a retailer/platform subscription program and uses a quasi-experimental design. The estimated mechanism and purchase effect may differ for SaaS subscriptions with different fees, benefits and usage patterns.
Possible founder application
When studying a paid plan or membership, distinguish benefit-driven usage from behavioral effects of the upfront commitment. Segment responses and evaluate retention and margin alongside purchase volume.
Evidence access
Publisher abstract and institutional record
Journal of Marketing Research abstract and institutional record; method and headline decomposition are stated in the 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.