A researcher finds that people who work in a fish processing plant, doing work that most people find extremely unpleasant, still have a positive mood about 60 percent of the time. Which of the following concepts can explain such a finding?

A) bandwagon effect
B) framing effect
C) the fundamental attribution error
D) self-serving bias
E) positivity offset

E
Explanation: E) The people in the plant are generally happy and positive which is the definition of positivity offset, or the tendency of most individuals to experience a mildly positive mood at zero input (when nothing in particular is going on).