Seven-Year Retention of Oddity Learning Set in Monkeys 1
C. Johnson, Roger T. Davis · Perceptual and Motor Skills · 1973
Old highly experienced rhesus monkeys (Macaca mulatta) retained oddity learning-sets nearly perfectly until retested 7 yr. later without specific intervening experience on oddity problems. Younger animals, which were not as proficient at oddity learning-sets initially, very rapidly approached the level of the old animals during the test for retention.