Which of the following concepts refers to the belief in one's capabilities to execute the behaviors needed for task success?

The concept that refers to the belief in one's capabilities to execute the behaviors needed for task success is self-efficacy. Self-efficacy is a crucial aspect of psychological theory introduced by Albert Bandura, emphasizing the importance of an individual's belief in their own ability to perform specific tasks. This belief significantly influences motivation, behavior, and performance. A person with high self-efficacy is more likely to take on challenges and persist in the face of difficulties, believing they can achieve their goals.

The other concepts listed focus on different aspects of motivation and organizational behavior. Valence indicates the value an individual places on the rewards of a task, which is more about the desirability of outcomes rather than the capacity to achieve them. Goal-setting theory emphasizes the importance of setting specific and challenging goals to enhance performance, while equity theory relates to the perceived fairness of outcomes in comparison to others. These theories do not directly address the individual’s belief in their capability to succeed in executing tasks, which is the cornerstone of self-efficacy.