Wohlheiter, K.A., Dahlquist, L.M. (2013). Interactive versus passive distraction for acute pain management in young children: The role of selective attention and development. J Pediatr Psychol 38, 202-212. doi: 10.1093/jpepsy/jss108. http://jpepsy.oxfordjournals.org/content/38/2/202.full.pdf+html