| Abstract: | In a study with 18 Long-Evans hooded rats, normal Ss and Ss with septal lesions were run on a differential reinforcement of low rate schedule in the presence or absence of a differential response feedback produced by systematically varying the force required to depress the lever. For each of 3 treatment conditions, the required force either decreased, increased, or remained constant. By the end of training, normal and lesioned Ss were not significantly different from each other on all performance measures examined when differential response feedback was provided (i.e., decreasing or increasing force). However, significant lesion-normal differences were present when such feedback was absent (i.e., constant force). (19 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
