Veronica works hard and puts in many extra hours. For this, she can anticipate a pay raise, a promotion, or an expanded sales territory. However, getting a promotion is most important to Veronica. According to the useful guidelines of the $\_\_\_\_\_\_\_$ theory, her manager must recognize that $(1)$ she is putting in hard work and long hours to obtain a promotion, $(2)$ what motivates Veronica will change over time, and $(3)$ they must clearly show Veronica how to attain the desirable reward.