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Previous episode Dopamine and habits: how the brain learns which cue matters

How habits form: why you do things you never decided to do

Habits and rewards: why you keep doing what you no longer enjoy

Most evenings, the scrolling is not even fun anymore, and still it goes on. Rats in a lab showed why, with a lever and a food they had stopped wanting.

  1. 1 In a classic study from the early 1980s, rats learned to press a lever to get a bit of food. Some trained for a short time. Others pressed it hundreds of times, over many days.leverfoodshort traininglong training

    In a classic study from the early 1980s, rats learned to press a lever to get a bit of food. Some trained for a short time. Others pressed it hundreds of times, over many days.

  2. 2 Then the scientists made that food unwanted: after eating it, the rats felt sick, so they stopped eating it. Every rat now turned away from it, short training or long.the same food

    Then the scientists made that food unwanted: after eating it, the rats felt sick, so they stopped eating it. Every rat now turned away from it, short training or long.

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Next episode If-then plans: how to tie a new habit to your day

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