When Ian Deary and his colleagues retested 80-year-old Scots, using an intelligence test they had taken as 11-year-olds, the correlation of their scores across seven decades was

You are asked to speak before a local elementary school's Parent Teacher Association (PTA) about suicide attempts by the very young. You should be sure to mention that suicide attempts by the very young often occur when they have:

A) shown a sudden drop in interest in death in general. B) run away from home. C) experienced the birth of a sibling. D) begun to ignore criticism from others.

REM sleep is divided into three stages

Indicate whether this statement is true or false.