You have been placed in charge of a new department whose performance has dropped off in the past few years. You realize that turning around the department’s performance will earn you high regard among your peers - something that you value very much. In an attempt to motivate your new staff to increase their performance, you call them into your office and tell them your plan is to make your department, "the department with the highest output and lowest error rate in the entire corporation." Since your department is currently number three in both of these areas, this seems like a realistic outcome. Your motivational approach is based upon which of the following theories?
a) Equity theory
b) Goal setting theory
c) Expectancy theory
d) Positive reinforcement theory