Briefly summarize the experimental conditions used by Iwata et al. (1994) to assess self-injury. Then, discuss some of the obstacles to completing functional analyses laid out by Hanley (2012).

Iwata, B. A., Dorsey, M. F., Slifer, K. J., Bauman, K. E., & Richman, G. S. (1994). Toward a functional analysis of self-injury. Journal of Applied Behavior Analysis, 27, 197-209.

Hanley, G. P. (2012). Functional assessment of problem behavior: Dispelling myths, overcoming implementation obstacles, and developing new lore. Behavior Analysis in Practice, 5, 54-72.