Which of the following statements regarding intrinsic and extrinsic motivation is TRUE?
1) Intrinsic and extrinsic motivation are at work in the real world of students' lives.
2) Intrinsic motivation is more effective than extrinsic motivation.
3) Extrinsic motivation is more effective than intrinsic motivation.
4) Intrinsic and extrinsic motivation have no impact on students' lives.