Research project:
Moore, D. A. & Klein, W. M. P. (2008).  The use of absolute and comparative performance feedback in absolute and comparative judgments and decisions.  Organizational Behavior and Human Decision Processes, 107, 60-74.
Download a version of the paper here

Study 1
Stimulus materials
Data file
Pictures used (along with the answers for the actual weights of the people in the pictures)

Study 2
Experimental protocol