Which behavior involves rewarding an employee specifically for completing tasks well?

The behavior that involves rewarding an employee specifically for completing tasks well is contingent reward behavior. This concept is rooted in the idea of reinforcement, where specific rewards are given in direct relation to the positive performance exhibited by an employee. In contingent reward behavior, the recognition or reward is directly tied to the accomplishment of particular tasks or objectives. This not only reinforces desired behaviors but also motivates employees to maintain or improve their performance in the future.

In contrast, the other choices do not explicitly involve a direct link between rewards and task completion. Performance appraisal refers to a broader evaluation of an employee's performance, which may include feedback and development discussions but does not necessarily involve immediate rewards for specific task completion. Leadership by example focuses on leaders modeling desired behaviors rather than on providing rewards. Group incentive programs incentivize teams collectively rather than targeting individual task completion, which may dilute the direct connection between individual performance and specific rewards.