Participants made a same-different judgment of the internal features of two faces presented simultaneously on screen. Whereas responding to upright faces on "same" trials relied upon holistic processing strategies, responding to upright faces on "different" trials, as well as responding to inverted faces, relied upon part-based processing strategies. Our results are also cfrntrary to earlier reports in that we found that when attention is focused upon the internal features, presentation of these features alrnie is sufficient to form a discrimination judgment.
