A Study Conducted by Psychologist Russell Geen (1984)-In Which Participants

A study conducted by psychologist Russell Geen (1984) -in which participants were told that they would engage in a learning task in a noisy environment and would be allowed to control the volume of the noise-found that the performance of:

A) introverts declined even when they were in their preferred noise level.
B) introverts improved when they chose a noise level louder than the level chosen by extraverts.
C) extraverts improved even when they chose a noise level lower than the level chosen by introverts.
D) extraverts declined when they were given the noise level chosen by introverts.