Insight by Psychology
Basic ingroup–outgroup loyalties create social distance from outsiders, which reduces empathy and makes harmful treatment of outgroups psychologically permissible.
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Using precise numbers boosts persuasion because specific figures look evidence-based, and slightly imperfect, non-round numbers (e.g., 89% vs 90%) feel less manufactured and therefore more believable.
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.
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.
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.
Highlighting a shared identity increases loyalty and compliance because signaling 'one of us' triggers in-group affiliation, which makes people favor and follow group-aligned requests.
Successful people often believe the world is meritocratic because survivor bias leads them to observe only those who worked hard and succeeded, causing them to generalize that effort reliably produces success while ignoring failed but hardworking peers.
Dehumanization plus unchecked power enables extreme cruelty because turning people into 'non‑people' collapses emotional barriers to harm, and concentrated power with social conformity removes accountability for atrocities.