Memory for actions: How different?

In the early 1980s, several groups of researchers began research on a topic variously called action memory, the enactment effect, and the subjectperformed task effect. We take this as the topic of our chapter for several reasons. First, research by Lars-Göran Nilsson and his colleagues has played an important role in this research arena; second, Nilsson’s supervisor, Ronald L. Cohen, was one of the initiators and champions of this line of research until his early death; and third, the effect is quite interesting in its own right and is now a central topic in the field.