People may be more honest with health apps than with doctors; data from these apps is creating new avenues for research
We're More Honest With Our Phones Than With Our Doctors — In the late 1960s, an undergraduate psychology student at Wellesley College named Martha McClintock noticed …
Context & Ripple Effects
This 2016 NYT piece traces the phenomenon back to Martha McClintock's undergraduate observation at Wellesley College — people disclose things to a device they withhold from a clinician. Later coverage kept validating the premise: [[a:954739|multiple studies found people convey more personal thoughts when writing on smartphones than PCs]], extending the finding from health apps to everyday writing.
What changed after publication is what happens to that candor downstream. Researchers found 33 of 36 depression and smoking-cessation apps shared data with third parties, therapy apps were shown notifying third parties of suicidal ideation, and by 2023 a study traced Americans' mental-health records to 11 data brokers selling information on antidepressants and insomnia likely acquired from app makers.
First-order effects
- Researchers gain access to self-reported data streams that clinical encounters never capture, opening research avenues built on disclosures patients would not give their doctors.
- App users' most sensitive admissions — mood, symptoms, suicidal thoughts — sit with consumer software companies rather than under clinical record-keeping.
Second-order effects
- App makers face a monetization temptation the coverage documents directly: sharing user disclosures with third parties, which is how mental-health data ended up with brokers.
- Medical groups pushed back against the federal data-sharing rules that let patients pipe health records into apps, arguing the rules lack strong privacy protections for exactly this flow.
Third-order effects
- If the pattern holds, the honest-data advantage becomes a structural split: the richest behavioral health dataset lives outside traditional medical privacy regimes, governed instead by app terms of service and broker marketplaces.
- Regulatory pressure follows the leak path — each documented sharing practice gives medical groups and lawmakers a concrete case for extending clinical-grade data protections to consumer health apps.
The trend: Health disclosure is migrating from doctors' offices to consumer apps, making candid patient data simultaneously a research asset and the industry's largest unregulated leak.