Key area versus number of keys in the pigeon’s preference for free choice over forced choice: A preliminary study

Abstract

Cortcurrent-chain schedules have demonstrated the pigeons preference for two keys (free choice) over one key (forced choice), even with the two-key and one-key condítions equated on the basis of time per reinforcer, responses per reinforcer, and other variables. This study shows that the preference occurs with the conditions equated iii terms of arta available for pecking. Thus, the preference is based upon the availability of two responseclanes (operants) and not on the opportunity for more variable responding.