@INCOLLECTION { kaplan:05a, author = {Kaplan, Frédéric and Oudeyer, Pierre-Yves},booktitle = {Models and mechanisms of imitation and social learning: Behavioural, social and communication dimensions},editor = {Dautenhahn, K. and Nehaniv, C.},note = {Language},publisher = {Cambridge University Press},title = {The progress-drive hypothesis: an interpretation of early imitation},type = {INCOLLECTION},year = {2006},}