Searching for One or Many Targets: Effects of Extended Experience on the Runs Advantage
Journal of Experimental Psychology: Animal Behavior Processes
Single vs mixed target trial sequences & extended experience, Runs advantage, Female pigeons
Pigeons searched for any of several targets in experiments designed to explore attentional priming or search-image formation. Three experiments assessed the runs advantage, seen in improved search efficiency during single-target trial sequences compared with search efficiency during mixed-target sequences. Experiment 1 varied the number of items in the search display and the target set. Well-practiced pigeons showed the runs advantage only for a display size of 36 and a target set of 8. Experiments 2 and 3 followed the runs effect over training. For a target set of 4, the runs advantage was present initially but diminished with practice. For a target set of 12, the runs advantage persisted. The data suggest that learning permits a shift from controlled to automatic processing of memory, but constrains the number of items that can be addressed in parallel.
Vreven, Dawn L. and Blough, Patricia M.. "Searching for One or Many Targets: Effects of Extended Experience on the Runs Advantage." Journal of Experimental Psychology: Animal Behavior Processes 21, no. 1 (1998): 98-105. Accessed at http://digitalcommons.framingham.edu/psych_facpub/5