Much research demonstrates the value of catharsis for improving mood and relieving mental illness

In response to a threatening stimulus, blood pressure increases, pupils dilate, and digestion stops. These responses reflect activation of the ___ nervous system.

A) somatic B) sympathetic C) parasympathetic D) central

The head can block some of the sound reaching one ear, which makes the sound more intense in one ear than the other. The brain can use this phenomenon—known as a sound shadow—to determine which of the following?

A) the frequency of the sound B) the location of the sound's source C) the loudness of the sound D) what the sound is