The thank-you letter lands in the inbox. The donor reads it, feels a flicker of warmth, and moves on. You did everything right — personalized it, named the impact, added a compelling story. And yet this donor's next gift, if it comes, will be driven by something your letter barely touched: the quiet, persistent question every donor is asking, Am I still the kind of person who does this?

The Finding

A landmark field experiment published in Management Science answered a question most fundraisers haven't thought to ask. Judd Kessler and Katherine Milkman tested whether priming a donor's identity — rather than describing impact or urgency — would change giving rates in large-scale American Red Cross appeals. It did, measurably and consistently. Appeals that activated a donor's identity as a previous giver or as a member of a local community generated significantly more donations than standard asks. Critically, the identity prime worked best when it referenced a facet of self that the donor already held strongly: long-tenured donors responded more to the "previous donor" prime; donors in smaller cities responded more to the community prime. The appeal wasn't selling them on the cause. It was confirming who they already were.

A 2025 meta-analysis published in Nonprofit and Voluntary Sector Quarterly extended this into a sweeping synthesis of 40 years of research. Chapman and colleagues analyzed 109 effect sizes across 89,570 participants and found a medium-sized relationship (r = .29) between social identification and charitable giving. Identification with fundraisers showed the strongest effect (r = .36), followed by identification with beneficiaries (r = .24) and fellow donors (r = .23). The implication is significant: the strongest driver of giving isn't how much someone cares about the cause — it's how much they feel they are someone who gives to causes like this one.

Meanwhile, a 2025 study in Frontiers in Communication by Crawford and Jackson found that donors who perceive congruence between their ideal charity brand and the actual charity's brand personality give more. What's being aligned isn't marketing aesthetics — it's self-concept. Donors are asking, unconsciously, whether this organization reflects who they aspire to be. Age and emotional stability predicted greater perceived congruence, suggesting that identity-anchored giving deepens over time rather than diluting.

The Neurogiving Angle

In Neurogiving, I describe how the brain's reward system activates during giving through what researchers call the "warm glow" — a hedonic response tied to the ventromedial prefrontal cortex and the brain's broader system for self-referential processing. What's under-discussed is how deeply this reward is linked to identity, not just altruism. When someone gives, their brain is doing something beyond evaluating the cause: it's updating the story about who they are. That updating process feels good — and that good feeling reinforces the behavior.

This connects directly to how the brain builds habits and identity simultaneously. The habit loop (cue → routine → reward) isn't just behavioral — it's neurologically self-referential. When giving becomes a habit, it also becomes an identity marker. The brain begins to associate "I give to X" with the reward signal, which means any disruption to giving — a missed ask, a lapsed renewal — carries a subtle identity threat. This is why lapsed donors are worth reactivating with identity language, not just re-engagement offers. They haven't just stopped giving; they've let go of a piece of how they understand themselves.

The cross-sector data makes this strikingly concrete. Research on athletic identity — published in a 2023 systematic review in Sports — found that athletes with strong athletic identity persist through injury, setbacks, and institutional barriers because quitting would require giving up a core piece of self-concept. They don't run because they feel like it. They run because they're runners. This is exactly what high-performing donors look like. The donor who gives every year despite budget pressures, who upgrades before you ask, who keeps the organization in their will — they're not calculating ROI. They're staying consistent with who they understand themselves to be.

The Application

Here's a thought experiment worth running before you write your next appeal.

Take your five most loyal donors — people who've given at least five consecutive years. Now read your last appeal letter back to yourself. How much of it was about your organization's work and impact? And how much of it treated the donor as a person with an identity, a self-concept, a sense of who they are in the world because they give to you?

Most appeals are 90% about the organization and 10% about the donor. Identity research suggests the ratio should be closer to inverse — not as flattery or gratitude, but as genuine acknowledgment of the identity these donors are expressing through their giving. The distinction matters. "Your gift helped 50 families" is impact language. "You're someone who shows up when it counts" is identity language. Both can be true. Only one connects to the motivational system that actually sustains long-term giving.

There's a specific decision point here worth investigating in your own organization: What language do you use in your second-gift appeal — the one that determines whether a first-time donor becomes a repeat donor? The first gift is often cause-driven. The second gift is where identity begins to take root. If your second-gift appeal looks identical to your first-gift appeal (impact, urgency, need), you may be missing the most fertile window for identity formation in your entire donor pipeline.

Research Sources

Reflections on Brand Image: The Influence of Donor Ideal and Perceived Charity Brand Congruence on Charitable Giving — Crawford & Jackson, Frontiers in Communication, 2025 — Donors who perceive congruence between their ideal charity brand and the actual charity's brand personality report making larger financial contributions.

Social Identification and Charitable Giving: A Systematic Review and Meta-Analysis — Chapman, Spence, Hornsey & Dixon, Nonprofit and Voluntary Sector Quarterly, 2025 — A 40-year meta-analysis of 89,570 participants found a medium-sized relationship (r = .29) between social identification and charitable giving.

Identity in Charitable Giving — Kessler & Milkman, Management Science, 2018 — Field experiments with the American Red Cross demonstrated that priming donor identity through appeals generates more donations than standard impact-focused asks.

Identity Work in Athletes: A Systematic Review of the Literature — Chun, Wendling & Sagas, Sports (Basel), 2023 — Athletes with strong athletic identity persist through significant barriers because giving up would threaten a core dimension of self-concept — a direct cross-sector analogy for donor behavior.

What's in LAB NOTES PRO

The paid edition this week goes deeper into three additional studies — including a longitudinal adolescent cohort that tracked how self-concept drives prosocial behavior over time, and a neuroscience review that explains the specific brain mechanisms behind identity-based generosity. There's also a context-by-context breakdown for major gifts, annual fund, planned giving, and recurring donors, plus the three ways organizations misapply identity research (and one of them will make you wince at a solicitation letter you've probably sent). The Donor's View section this week inhabits the inner world of a loyal mid-level donor reading a generic renewal — it's a useful experience. And The Experiment is a split-test design you can run in your next renewal cycle that would tell you definitively whether identity language outperforms impact language with your specific file.

Go deeper with LAB NOTES PRO →

Sign-off

Until next time —

Cherian

What's one word you'd use to describe how your organization's most loyal donor understands themselves? I'd genuinely like to know — hit reply.

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