Final answer:
The statement is FALSE. Both intrinsic and extrinsic motivations are important and can effectively enhance work motivation. The impact of extrinsic rewards on intrinsic motivation varies depending on several factors such as the type of reward and its expectancy.
Step-by-step explanation:
The statement that only intrinsic motivation enhances work motivation in an effective way is FALSE. Motivation in the workplace is complex and can be driven by both intrinsic and extrinsic factors. While intrinsic motivation comes from internal satisfaction and personal fulfillment in performing an activity, extrinsic motivation involves external rewards such as money or praise.
Research indicates that extrinsic rewards can have varying impacts on intrinsic motivation. Certain types of extrinsic reinforcement, especially unexpected rewards like verbal praise, may actually increase intrinsic motivation. However, when extrinsic motivators are expected or overemphasized, they might diminish the intrinsic motivation to perform a task, leading to what is known as the overjustification effect. In educational settings, designing learning environments that promote sense of belonging, respect, autonomy, and relevance to the student can also enhance intrinsic motivation.
It is important to consider that work motivation is often influenced by a blend of intrinsic and extrinsic factors, and the mix of these might change over time. Moreover, motivations can be context-dependent and differ based on individual expectations, values, and the nature of the task.