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The frustration-aggression hypothesis, introduced by John Dollard, Neal Miller, and their colleagues at Yale in 1939, proposes that frustration — defined as the blocking of a goal-directed behavior — always leads to some form of aggression, and that aggression is always caused by frustration. Few ideas in social psychology sparked as much debate, inspired as much follow-up re...

Emerging adulthood is a distinct developmental stage spanning roughly ages 18 to 25, first proposed by psychologist Jeffrey Jensen Arnett in 2000. It sits between the end of adolescence and the full responsibilities of adult life — and according to Arnett, it is not simply a transition period but a stage with its own defining features, psychological tasks, and inner...

The misinformation effect occurs when a person’s memory of an event is altered by false or misleading information encountered after the fact. First documented by psychologist Elizabeth Loftus in the 1970s, the effect reveals something uncomfortable about human cognition: memory is not a recording. It is a reconstruction — and that reconstruction is far more fragile than most ...

Correlation vs causation examples are everywhere — in health headlines, social media feeds, and psychology research papers. A correlation tells you that two variables move together; causation tells you one actually produces the other. These are not the same thing, and treating them as if they were leads to bad science, flawed policy, and decisions that can cause real harm.......