Psychology Facts

How people think, remember and behave.

4 facts

• Teenagers' Sleep Hormone Runs on a Later Schedule

  In adolescence, levels of the sleep hormone melatonin stay high later at night and drop later in the morning than in children and adults.

  Psychology

• The Brain Keeps Maturing Until the Mid-to-Late 20s

  The human brain finishes developing and maturing in the mid-to-late 20s, and the prefrontal cortex is one of the last parts to mature.

  Psychology

• Everyone Dreams for About Two Hours a Night

  Everyone dreams, spending about two hours each night dreaming, although most dreams are not remembered.

  Psychology

• People Spend About a Third of Their Time Asleep

  People spend about one-third of their time sleeping.

  Psychology