A comparison of simulated one-way and shuttle avoidance in an automated apparatus

The fully automated shuttle box employed in two experiments permitted the comparison within one apparatus of performance under a simulated one-way condition and the usual shuttle condition. Animals in the simulated one-way condition always ran from a white compartment into a black compartment, but alternated their direction of locomotion, as did the shuttle animals. In both experiments, animals run under the simulated one-way condition showed superior per cent avoidance performance relative to the shuttle animals. The results were compared with those obtained in other one-way avoidance and shuttle studies.