Are humans getting cleverer?
IQ is rising in many parts of the world. What's behind the change and does it really mean people are cleverer than their grandparents? It is not unusual for parents to comment that their children are brainier than they are. In doing so, they hide a boastful remark about their offspring behind a self-deprecating one about themselves. But a new study, published in the journal Intelligence, provides fresh evidence that in many cases this may actually be true.