Which Statement Demonstrates Perceptual Learning

Multiple Choice

Which statement demonstrates perceptual learning?

A) People who live in a city have no trouble sleeping through all of the street noise.
B) Professional wine tasters can easily distinguish between subtly different wines.
C) A crying baby becomes increasingly more bothersome to her parents.
D) A phobic patient gets used to being around spiders during one therapy session, but is fearful again at the start of the next session.