Machiavellian intelligence

According to Machiavellian intelligence hypothesis, humans are selected to outsmart each other so that other members' strategic goals and plans could be figured out, and complex social relationships could be navigated.
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False belief

False belief tests suggest that 'theory of mind' or 'mindreading' takes time to develop; a three-year old kids -compared to four-year olds - do not seem to have the ability to represent others' mental states.
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The Thatcher Illusion

The 'Margaret Thatcher illusion' or 'inversion effect' illustrates that our brains cannot process faces upside down.
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Do achievement goals, as opposed to mastery goals, lead to cheating?

Maria Konnikova examines insights from research on why people "choose" to cheat.+ more

A positivity ratio that didn't sail through smoothly

A well cited 2005 paper in a peer-reviewed journal that purported a magical 2.9013-to-1 "positivity ratio" to flourish in life was debunked recently. + more