Extrinsic hormone
Whenever an individual performs an action or behavior because the individual is affected by the external factors such as rewards or punishments, such form of motivation is called Extrinsic Motivation.
You get rewarded as promised for the actions you perform due to extrinsic motivation.
The needs or causes that lead to extrinsic motivation are: Money, Praise, Competition, Threat of a punishment
Extrinsic incentives can be used to motivate a whole group, thus creating a better learning environment in classrooms.
Extrinsic Motivation might only occur for limited period of time, and the individual stops performing actions after the punishment or reward is applied.
Example : A student attends guitar classes because his parents had promised him a reward.