Insight by Psychology

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.

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.

Eliciting a spoken, public commitment dramatically increases follow-through because people strive for consistency between their words and actions—prompting a verbal 'yes' can cut no-shows by about 64%.

We downplay luck's role in our success because fortunate events are external and unearned, so they don't register as things we did and therefore get omitted from our explanations for outcomes.

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.

Giving benefits or useful information first increases compliance because receiving a favor creates a felt obligation to reciprocate, which makes people more ready to say yes to later requests.

A practical strategy is to act as if you control your destiny to sustain effort, but also acknowledge luck and use any fortune to help others because belief in control drives persistence while admitting chance prevents overconfidence and promotes redistribution.

When people explain their beliefs or actions they often offer post‑hoc rationalizations because many causal mental processes operate unconsciously and are inaccessible to introspection.