G. Marchionini, UNC-CH
Evaluate Actions: Medical Case
•
Does the patient recover?
•
Were good decisions made?
–
patient, physician, hospital, HMO views?
•
Difficult (impossible?) to disambiguate
component effects
•
Task-oriented studies (e.g.., Hersh’s
medical student decisions)
The variability in the human and problem components is so great as to swamp any variance effects in other components
Hersh, W., Pentecost, J., & Hickam, D. (1996). A task-oriented approach to information retrieval evaluation, JASIS, 47, 50-56.