Openness to new ideas can reliably predict high cognitive ability.

Intelligent people habitually seek evidence that challenges, rather than confirms, their beliefs.

True intelligence sometimes looks like indecision—frequent mind-changing can signal deeper thinking.

Across decades of research into how people think, one behavioral pattern keeps emerging in the data as a reliable marker of high cognitive ability, and that habit has nothing to do with how quickly someone reaches a conclusion.

In a landmark 1997 study published in the Journal of Educational Psychology, psychologists Keith Stanovich and Richard West found that the single strongest thinking disposition associated with higher intelligence was what they called actively open-minded thinking: the habitual tendency to seek out evidence that challenges one’s existing beliefs, to sit with uncertainty, and to revise one’s conclusions when the data demands it.

Over the last three decades, that finding has been replicated so consistently across different populations and methodologies that a 2023 comprehensive review in the Journal of Intelligence, one of the field’s most authoritative journals, confirmed it still stands as one of the most robust links between a cognitive disposition and measured intellectual ability.

How This Habit Compounds Your Intelligence

Actively open-minded thinking reflects the extent to which someone habitually weighs new evidence against a favored belief, considers others’ views before closing on a position, and remains genuinely open to being wrong. It sounds straightforward. In practice, it cuts........

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