NEW YORK TIMES: NYTimes.com
THERE are two kinds of motive for engaging in any activity: internal and instrumental. If a scientist conducts research because she wants to discover important facts about the world, that’s an internal motive, since discovering facts is inherently related to the activity of research. If she conducts research because she wants to achieve scholarly renown, that’s an instrumental motive, since the relation between fame and research is not so inherent. Often, people have both internal and instrumental motives for doing what they do.
What mix of motives — internal or instrumental or both — is most conducive to success?