The alternative to a behaviorist approach to psychology is Cognitivism. And cognitivism focuses on opening up the black box, figuring out what actually is going on in there that motivates people to behave in certain ways. Now, as with everything I talk about here is psychology, I'm over simplifying and just taking certain aspects from very rich, sophisticated, complex and longstanding debates. But for our purpose is, the important thing to focus on is that if we start to think in a cognitivist way, start to think about what's actually going on in motivation, we need to start distinguishing between different kinds of motivation and different kinds of rewards. And in particular, think about two broad categories which can be called Intrinsic and Extrinsic Motivation.