Psychology · Re
Reciprocity.
Give first.
Reciprocity is the feeling that we should return a favour. In marketing it means giving something genuinely useful before asking for anything: a guide, a tool, a sample, an honest first opinion. The research says it works, but less than the stories suggest, it fades with time, and a gift that's really a sales pitch can make things worse.
Written by Dan Picken, a marketer applying published research. Last checked 30 October 2026.Share of letters that got a donation, compared with no gift. From Falk's field experiment with about 10,000 letters.
What the
research says.
Evidence: DependsReal and repeatable in the field, but the effect depends on the gift being useful, unconditional and recent. Gifts can attract people who come for the gift, not for you.
The best field evidence comes from charity appeals. Armin Falk sent about 10,000 donation letters: one third with no gift, one third with a small gift, one third with a large one. Compared with no gift, the share of people who donated rose 17% with a small gift and 75% with a large gift.
Restaurants show the same pull at a smaller scale. In a study of tipping, diners who got a small piece of chocolate with the bill tipped more, and tips rose with the amount of chocolate.
In business, free samples look to work beyond the moment. A study of sampling promotions found measurable sales effects as much as 12 months later, partly from people who wouldn't have tried the brand otherwise.
Now the limits. In a door-to-door fundraising experiment, an unconditional gift lifted giving at first, but households first approached with a gift were less likely to give the next time. And the feeling of owing someone fades: in one set of studies, people who received a favour valued it less as time passed, while the giver valued it more.
In your
marketing.
Free tools
A calculator or checker someone can use with their own numbers, with nothing to sign up for. The tools on this site are built on that idea.
B2B
Samples
A trial size or sample with the first order, so the second order is the easy one.
E-commerce
A first opinion
A short honest review of what someone has now, with the top fixes written down, whether or not they hire you.
Trades
Where it backfires
A 'free' offer with a catch in the fine print. The ACCC has long said any way a 'free' offer isn't free must be prominently and clearly spelled out.
All
A pitch,
or a gift?
The same idea, given two ways. Only one earns anything back.
| Industry | Feels like a pitch | Feels like a gift |
|---|---|---|
| Trades | 'Free quote' that's a sales visit | A checklist of what a fair quote should include, from anyone |
| E-commerce | 10% off, with an email gate | A sample with the first order, no strings |
| B2B | A gated ebook about the product | A calculator buyers can use with their own numbers |
| Finance | 'Free consultation' that's a product pitch | A plain explainer on how borrowing power is worked out |
| Not-for-profit | A gift before the ask, every time | A thank-you after the gift, and a story of what it did. Gift-led donors can be less loyal |
Try it
Give first.
Make it worth having.
Pick your industry and where your buyer is. You get one idea for a free thing worth giving. Then tick what your own freebie is really like, to see whether it lands as a gift or a pitch.
One idea worth giving
Gift or pitch?
0/6
Calling something 'free' when there's a catch can mislead. The ACCC has long said any way a 'free' offer isn't free must be prominently and clearly spelled out. A marketer's checklist, not legal advice.
Try this
Give a tool or a first opinion that's useful even if they never buy.
It backfires when
The gift is really a sales pitch, or has a catch.
In my experience
Free audits and tools are a big part of how I find work, so I have a stake in this one. What I've seen is that the giving only works when the thing is useful on its own. A 'free audit' that's really a sales call with a PDF attached doesn't earn much goodwill, and people can tell.
Test it on
your own buyers.
- 1
Pick one freebie
A guide, tool, sample or first review you can give away.
- 2
Remove the strings
Drop the form or the condition for half the visitors, if your site or ad platform lets you split traffic.
- 3
Measure what follows
Enquiries or sales over the next eight weeks, not downloads.
- 4
Check the second sale
Compare repeat purchases or follow-up enquiries too. Gifts can attract people who came only for the gift.
Questions
people ask.
Does giving something away for free really increase sales?
It can. In charity appeals, a gift in the letter raised the share of people who donated by 17% to 75%, depending on its size. Free samples have been linked to sales effects lasting up to 12 months. The gift has to be worth having.
Should I put my free guide behind an email form?
Think about what the form does to the gift. A gate turns it into a trade: their details for your content. That can be fair for something substantial. For a short guide or a simple tool, giving it freely usually builds more goodwill.
Can a free gift backfire?
Yes. In one fundraising experiment, an unconditional gift lifted giving at first, but those households were less likely to give the next time. A gift can attract people who came for the gift.
How long does the feeling of owing someone last?
Not long. Research found people who received a favour valued it less as time went on. Keep giving useful things, rather than relying on one big gift.
Is the famous Coke study real?
Dennis Regan's 1971 study is real and published in the Journal of Experimental Social Psychology. It's widely retold, often with details the paper doesn't support, so treat the popular versions with care and lean on the larger field studies instead.
Can I call it free if they have to buy something?
Only if the condition is clear. The ACCC's position is that any way a 'free' offer isn't free should be prominently and clearly spelled out. An asterisk isn't enough.
Keep going
Where is this costing
you sales?
Takes a minute. Audits come back within 1 to 2 business days. For anything else, I'll get back to you as soon as possible.
What happens next
- 1I'll ask for read-only access, or just your website for a search audit.
- 2I go through it and write up the 3 biggest fixes.
- 3A 20-minute call to walk you through it. No pitch unless you ask.