People answer people

In 2005, Randy Garner stuck handwritten Post-it notes on survey requests and watched the response rate jump from 36% to 75%. Same researcher. Same survey. Same university letterhead. The variable was the visible trace of a person who had taken twenty seconds to ask.

The effect is older than the internet, and it still works online.

The research, briefly

Four studies, two decades, four different surfaces — and the same shape every time:

• Garner (2005) ran the Post-it note experiment above. The personal sticky note roughly doubled the return rate of a mail survey. A handwritten "thank you" on a cover letter alone raised responses by about a third.
• Guéguen and Jacob (2002) added a small photograph of the survey requester to an email invitation. Recipients agreed to participate at higher rates. The researchers attributed the lift to social presence — the feeling of being asked by a someone rather than a something.
• NextAfter (2018) tested "from an individual" vs "from an organization" sender names on an identical fundraising email. The personal sender produced a 38% higher open rate. The body of the email was unchanged.
• Tsekouras, Gutt, and Heimbach (2024) found that more human-like, conversational review interfaces produced higher star ratings and shorter comments. The warmth came at a small cost in detail.

None of these studies is decisive on its own. Together they describe a consistent shape: the more visible the asker, the higher the response rate.

What it is, and what it is not

The thing that works is not "include a name." A randomly selected corporate representative does not produce the lift. A study that varied a stated requester's gender and job title in email invitations found no significant difference — the names were generic and the framing was institutional.

The thing that works is the visible trace of effort, attached to someone the respondent could imagine talking back to. The Post-it note works because someone wrote it. The photograph works because someone sat for it. The "from Alex" works because Alex appears to exist.

This is also why most generic "Please rate your experience" asks feel optional. There's no asker to disappoint. The user knows the message was assembled by a system, and they treat their response the same way.

Why it works

Three forces do most of the work. They overlap.

Authenticity: a personal request reads as a real claim from a real person. The reader trusts it more, because there's a name to be wrong about.

Reciprocity: someone visibly took the trouble to ask. The social default is to reciprocate trouble with trouble. A respondent who would not fill out a form will write back to a person.

Accountability: a personal sender implies someone will read the answer. The respondent's effort feels like it could land — the reply has a destination, not just a database row.

The studies tend to interpret their results through one or two of these. They're probably the same effect, told three ways.

What to do with this

In a product, the cheapest version of the lift is putting a face and a first name on every ask that takes the user's time. Not a logo. Not "the team." A person, with a job title that makes it plausible they will read the response.

The fancier version is following through. The respondent who answers an in-app survey from "Alex, the designer" is owed a reply from Alex when something they said gets acted on. The first lift is from the appearance of a person; the second, larger one is from the appearance turning out to be true.

The shape of the rule is small and old. Run it through five different fields and you arrive at the same point: people answer people. The corporate form translates the ask into something less personal, and you lose most of the responses you would otherwise get.

Sources

• Guéguen, N., & Jacob, C. (2002). Social Presence Reinforcement and Computer-Mediated Communication: The Effect of the Solicitor's Photography on Compliance to a Survey Request Made by E-Mail. CyberPsychology & Behavior, 5(2), 139–142.
• Garner, R. (2005). Post-It® Note Persuasion: A Sticky Influence. Journal of Consumer Psychology, 15(3), 230–237.
• NextAfter. (2018). Does an email sent from an individual produce a higher open rate than an email sent from an organization? Experiment ID: #7619.
• Tsekouras, D., Gutt, D., & Heimbach, I. (2024). The Robo Bias in Conversational Reviews: How the Solicitation Medium Anthropomorphism Affects Product Rating Valence and Review Helpfulness. Journal of the Academy of Marketing Science, 52(6), 1651–1672.