have a jar of mini chocolate chips by your desk and pop one in your mouth every time you google an interesting question on scholar or wikipedia.

Is there any evidence this works? 1) Does the brain treat these discretionary pleasures as reinforcement? 2) If it does, do attribution effects undermine the efficacy? Research in attribution effects show that extrinsic rewards sometimes undermine intrinsic interest, i.e., curiosity. "Negative effects are found on high-interest tasks when the rewards are tangible, expected (offered beforehand), and loosely tied to level of performance."