Professor Crane Was Ecstatic When He Learned That His Research

Multiple Choice

Professor Crane was ecstatic when he learned that his research study had been approved for publication. His feelings of joy quickly dissipated, however, when he heard a colleague recently had three different research articles accepted for publication. His declining emotional satisfaction best illustrates

A) biofeedback.
B) relative deprivation.
C) learned helplessness.
D) the adaptation-level phenomenon.