The first principle of improvisation—hearing offers—hinges on attunement, leaving our own perspective to inhabit the perspective of another.

As Johnstone puts it, “Good improvisers seem telepathic; everything looks prearranged. This is because they accept all offers made.

Keth Johnstone… Impro: Improvisation and the Theatre.

Improvisation for the Theater by Viola Spolin.

Creating Conversations: Improvisation in Everyday Discourse by R. Keith Sawyer. Sawyer is a leading scholar of creativity.