IQ

Research has identified embedded racism in IQ tests. Now, prosecutors in at least eight states are using that research—to legalize more executions.

• By David M. Perry

Despite using them for almost a hundred years it's still unclear how accurate or fair an IQ test really is.

• By Daphne Martschenko

A new study finds lower mortality rates among highly intelligent people—a link that continues well into old age.

• By Tom Jacobs

New research shows poorer and richer kids' brains have physical differences, but there's scope for change.

• By Francie Diep

A Danish study suggests a link between severe infection and lower IQ scores.

• By Nathan Collins

One new study links IQ with the quality and quantity of one’s education, and another to a child’s home environment.

• By Tom Jacobs

In reporting about electrical brain stimulation, Emma Young of course had to try it for herself. Would it change her?

• By Emma Young

How technicalities, not morals, are bringing down the death penalty.

• By Ted Scheinman

Answer: Win this show and the general population will believe you are smart. Question: What is Jeopardy!?

• By Noah Davis

Why do some children benefit more from tutoring than others? And does one small education study have the ability to drastically change our behavior as parents?

• By Sharon Begley