reversal learning 11 male 7 Reversal Learning 6 adult 6 Article 5 controlled study 5 female 5 nonhuman 5 Animals 4 Humans 4 Learning 4 Male 4 animal 4 animal experiment 4 human 4 Reversal learning 3 animal model 3 cognition 3 hippocampus 3 learning 3 memory 3 rat 3 Discrimination Learning 2 Female 2 Memory 2 Morris water maze test 2 Motivation 2 animal tissue 2 article 2 cognitive flexibility 2