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@psychology· Personal Effectiveness

Children born earlier in a cutoff-based youth sports cohort gain long-term advantages because being older on average makes them bigger and faster, which attracts more playing time, tournaments, and better coaching that compound into elite-selection biases.

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People underestimate the complexity of tasks like driving because they judge difficulty from their fluent personal experience and ignore rare edge cases and contextual variability that make such tasks hard for AI.

Daniel Kahneman: Thinking Fast and Slow, Deep Learning, and AI | Lex Fridman Podcast #65

Your capacity for wholeheartedness is limited by how much heartbreak you're willing to endure, because wholehearted engagement requires vulnerability that exposes you to loss and pain.

The Power of Vulnerability - Brene Brown

When constructing memories people encode sequences and salient moments more than elapsed time, so remembered narratives emphasize highlights and often omit duration when evaluating experiences.

Daniel Kahneman: Thinking Fast and Slow, Deep Learning, and AI | Lex Fridman Podcast #65

People overestimate their own contribution to group tasks because they vividly experience and remember their actions while not fully observing or recalling others', which leads them to overweight personal effort in judgments of who did what.

Why Being Delusional is a Superpower

Slightly increasing your speaking cadence makes you seem more confident and convincing because speaking a bit faster signals familiarity and conviction, which listeners interpret as confidence and truthfulness.

Robert Cialdini - 7 Principles of Influence Explained

Wearing emotional armor doesn't stop pain but, because it blocks the vulnerability that leads to closeness, it prevents access to intimacy, trust, creativity, and joy.

The Power of Vulnerability - Brene Brown

Researchers systematically overestimate between‑subject manipulation strength because they mentally simulate both conditions (a within‑subject perspective), which makes effects feel larger than they appear to participants who experience only one condition.

Daniel Kahneman: Thinking Fast and Slow, Deep Learning, and AI | Lex Fridman Podcast #65

Social isolation harms health because lacking supportive people keeps the body in prolonged fight‑or‑flight mode, raising inflammation and stress hormones that wear down systems and reduce happiness.

The Secret to a Happy Life — Lessons from 8 Decades of Research | Robert Waldinger | TED