• Does Eating Sugar Restore Your Willpower?

    Does Eating Sugar Restore Your Willpower?

    TL;DR Where did the «willpower runs on sugar» idea come from? In 2007, Matthew Gailliot, Roy Baumeister and colleagues published a study with a clean, almost elegant logic. Suppose willpower draws on a limited resource, the way a muscle draws on glucose. Then holding yourself back should lower your blood sugar. And topping the sugar…

  • Is Polyvagal Theory Evidence-Based?

    Is Polyvagal Theory Evidence-Based?

    TL;DR Where did Polyvagal Theory come from? Let’s start with the word itself, because most people repeat it for years without ever being told what it means. «Poly» just means many. «Vagal» refers to the vagus nerve — a long cable that runs from your brainstem down through your chest and gut, and does most…

  • Does Growth Mindset Actually Work?

    Does Growth Mindset Actually Work?

    TL;DR Where did «growth mindset» come from? «You must be really smart at this.» Or: «You must have worked really hard.» In 1998, two researchers at Columbia University in New York — a graduate student named Claudia Mueller and her professor, Carol Dweck — handed roughly 400 fifth-graders an easy puzzle, let every one of…

  • Чи вичерпується сила волі, як м’яз?

    Чи вичерпується сила волі, як м’яз?

    TL;DR Звідки взявся міф «сила волі як м’яз»? Уявіть невелику кімнату в університетському кампусі десь у середині 1990-х. На столі — тарілка печива, ще теплого, і миска редиски. Студенти, які заходять, голодні — їх попросили пропустити прийом їжі заздалегідь, — і половині з них дають правило, яке заднім числом здається майже жорстоким: їсти тільки редиску.…

  • Does Willpower Run Out Like a Muscle?

    Does Willpower Run Out Like a Muscle?

    TL;DR Where does the «willpower is a muscle» myth come from? Picture a small room on a university campus sometime in the mid-1990s. On the table: a plate of cookies, still warm enough to smell, and a bowl of radishes. The students who walk in are hungry — they’ve been told to skip a meal…