Final answer:
Carl mows his elderly neighbor's lawn for $20, which is an example of extrinsic motivation because he is motivated by the external reward of money, as opposed to intrinsic motivation which comes from internal satisfaction.
Step-by-step explanation:
The concept in question relates to different types of motivation that can influence individuals in various scenarios. In the context provided, the question is referring to the example of Carl who mows his neighbor's lawn for $20. The type of motivation that drives Carl to perform this task is extrinsic motivation. This is because he is motivated by an external reward, which in this case is the monetary compensation he receives for his labor.
In contrast, intrinsic motivation is driven by internal factors, such as the enjoyment or satisfaction one gets from performing an activity. The overjustification effect is an instance where introducing extrinsic rewards can undermine intrinsic motivation. Theory X and Theory Y provide frameworks for understanding how managers view employees' motivation in the workplace, with Theory X aligning with extrinsic motivational tactics and Theory Y supporting intrinsic motivational strategies.