Brief history of the intrinsic motivation conceptFirst, the article presents a clear explanation of the emergence of the intrinisc motivation concept and explains commonalities and differences with several related psychological concepts. It explains that Harlow (1953) introduced the term intrinsic motivation and that he demonstrated that intrinsic motivation in rhesus monkeys can be undermined by giving them rewards. Deci (1971) did a classical experiment which demonstrated this effect in people and which is one of the cornerstone experiments of self-determination theory. The article further explains how intrinsic motivation is at odds with the basic premise of behaviorism (Skinner, 1953) and with drive theories (Hull, 1943). A crucial step in the development of the intrinsic motivation concept was the publication of White (1959) which proposed the concept of effectance motivation as a general behavioral and developmental propensity and which formed the basis of one of the central concepts in self-determination theory: the need for competence. Also mentioned is the important publication of DeCharms (1968) which suggested that intrinsic motivation is rooted in the need of people to see themselves as the primary causal agents of their own actions. This publication formed the basis of one of the other central concepts of self-determination theory: the need for autonomy.
Neuroscientific research into intrinsic motivationThe central contribution of the article is the description of the emergence of a neuroscientific approach to intrinsic motivation research. This could lead to a more complete and more detailed picture of the conceptual meaning and workings of intrinsic motivation and it could stimulate new theory development. Up to now there are two clear lines of research. The first is aimed at understanding the relationship between intrinsic motivation and the dopaminergic systems in the brain. There is a clear conceptual link between intrinsic motivation and the dopamingeric system (dopamine is neurotransmitter which is associated with experiencing pleasure) but as yet there are only a few studies which have show clear empirical evidence for the link. The second line of research explores the relationship between intrinsic motivation and the activity of large-scale networks in the brain associated with salience detection, attentional control, and self-referential cognition.
This type of research has already led to one suggestion for further theory development. Up to now intrinisc motivation has been primarily connected to curiosity and mastery -mainly cognitive aspects- but research has shown that many forms of play have similar neurobiological underpinnings. More socially focused forms of exploration such as playing games, humor, and doing sports may thus be viewed as intrinsically motivated forms of socialization. The third psychological need, the need for relatedness, may thus play a more important role in the expression of intrinsic motivation than was previously thought.