Male 28 male 28 nonhuman 26 Animals 24 Extinction, Psychological 24 article 24 reinforcement 22 Brachyura 20 conditioning 20 controlled study 20 animal experiment 18 Memory 16 memory consolidation 16 priority journal 14 Conditioning, Classical 12 animal 12 learning 12 memory 12 Animalia 10 Time Factors 10 crab 10 Animal 8 Behavior, Animal 8 Conditioning (Psychology) 8 Cycloheximide 8 Decapoda (Crustacea) 8 Extinction 8 Extinction (Psychology) 8 Protein Synthesis Inhibitors 8 Reinforcement (Psychology) 8