This study examined relations between eye movements and accuracy scores in a delayed matching-to-sarnple procedure with multiple sample stimuli. Four adult humans responded with high accuracy when there were 2 samples per trial. When the number of samples was increased to 4 per trial, accuracy scores fell to intermediate levels for 2 of the subjects, and then recovered to high levels following practice. Eye-tracking analyses showed that subjects with high and low accuracy on the initial 4-sample trials made similar numbers of observations per trial , but high-accuracy subjects exhibited longer sample-stimulus observing durations. Practice and improvement to high accuracy was accompanied by relatively small changes in observing frequencies and large increases in sample-stimulus observing durations. The results are discussed in terms of independent stimulus control of different aspects of observing behavior topography.
Dube, William V.; Balsamo, Lyn M.; Fowler, Thomas R.; Dickson, Chata A.; Lombard, Kristin M.; and Tomanari, Gerson Y.
"Observing Behavior Topography in Delayed Matching to Multiple Samples,"
The Psychological Record:
2, Article 6.
Available at: http://opensiuc.lib.siu.edu/tpr/vol56/iss2/6