The Mere Measurement Effect
Asking someone whether they plan to do something makes them a little more likely to do it. The effect is small, but it costs one sentence, and it changes what a status question is for.
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The Hidden Profile Effect
When the best option only shows up once everyone's unique knowledge is pooled, groups usually miss it. Discussion keeps returning to what everyone already knows.
The Labor Illusion
People value a result more when they can see the work that went into it. Most of the effort behind your team's best output never travels with the file, so it never gets credited.
The Vacation Fade-Out Effect
Time off lifts health and mood, and the lift is generally gone in the first week back at work. The researchers' best guesses for slowing the fade all point at the return.
The MUM Effect
People pass on bad news less fully and less readily than good news, even when nobody can trace it back to them. Early warning depends on making the bad-news path cheap.
The Habit Discontinuity Hypothesis
A change of setting loosens old habits for a short while. A reorg, a new team or an office move opens that window, and in one field experiment it lasted about three months.
The Liking Gap
The liking gap is the distance between how much people like you after a conversation and how much you think they do. It shows up in teams too, widest between peers.
Pluralistic Ignorance and the Quiet Meeting
Pluralistic ignorance is when most of a group privately doubts something but assumes everyone else is on board, and a silent meeting is where it hides. The fix is letting every view land at the same moment.
Attention Residue: Why the Next Task Gets Half of You
Attention residue is the part of your mind still stuck on the task you just left. A short note on where you stopped, written before you switch, frees it up for whatever comes next.
The Illusion of Explanatory Depth
Asked to write out how a zipper works step by step, people's rating of their own understanding fell by a fifth. The same gap sits under most plans that reach your desk, and one question exposes it.
The Illusion of Transparency
Leaders assume their priorities and frustrations are plain to everyone. Research on the illusion of transparency shows your inner state leaks out far less than it feels like it does.
The Bystander Effect at Work
In 1968, 85% of people who thought they were alone reported a seizure before the victim went silent. With four others listening, 31% did. Your team channel runs the same experiment every day.
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The Curse of Knowledge
Tappers expected half their listeners to name the song. Three in 120 did. Once you know the answer, you cannot hear your own message the way someone without it hears it, and that includes your team's top priority.
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The Feedback Intervention Paradox
Across 607 results, feedback helped performance on average and still made it worse more than a third of the time. Whether the feedback was positive or negative did not decide which. Where it sent the person's attention did.
behavior-hack
The Zeigarnik Effect
An unfinished task keeps tugging at your attention until you finish it. Or until you write down exactly how, when and where you will. The second one turned out to work just as well.
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The Goal-Gradient Effect
Coffee buyers sped up with every stamp on a loyalty card, then slowed right back down once they started a fresh one. Effort follows distance to the finish line.
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Goodhart's Law at Work
When a measure becomes a target, it ceases to be a good measure. Wells Fargo showed how far that goes. The fix is to watch the signals nobody can push on directly.
behavior-hack
The Benjamin Franklin Effect
People tend to like you more after doing you a favor, not less. One detail matters: the effect showed up only when the person was asked directly.
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The Köhler Effect
Groups usually dampen individual effort. Under one specific condition they raise it, and the person who gains the most is the one least able on the task.
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Recovery Doesn't Batch
Time off reliably lifts wellbeing, and the lift is largely gone two to three weeks after returning. That says less about vacation than about what companies stack on top of it.
behavior-hack
Let Them Meet the Person They Helped
Callers who spent five minutes with one scholarship student were raising 171 percent more money a month later. The group who only read his letter didn't move at all.
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Recognition Works on the People Who Don't Get It
Unannounced thank-you cards raised output on a data-entry shift. Most of the gain came from the people who didn't receive one.
think-piece
You Cannot Kill Your Own Project
Handed $20 million and a failing project, the people who made the original call put $13 million behind it. Everyone else put in $9 million. The person best placed to see a failure is the one who can least afford to name it.
behavior-hack
The 19-Word Note
One sentence attached to critical feedback lifted revision rates from 17 to 71 percent among the students who trusted the institution least. It runs 19 words.