This corrects the acknowledgements for the following article published in the December 2013 issue of the Journal of Graduate Medical Education:

Cooper DD, Wilson AB, Huffman GN, Humbert AJ. Medical students' perception of residents as teachers: comparing effectiveness of residents and faculty during simulation debriefings. J Grad Med Educ. 2012;4(4):486–489.

The authors would like to acknowledge Anthony J Perkins, MS, for his work in the primary data analysis.