TY - GEN AU - Spear,N E AU - Spitzner,J H TI - Simultaneous and successive contrast effects of reward magnitude in selective learning SN - 0096-9753 PY - 1967///0903 KW - Animals KW - Conditioning, Psychological KW - Learning KW - Rats KW - Reaction Time KW - Reinforcement, Psychology KW - Reward N1 - Publication Type: Journal Article UR - https://doi.org/10.1037/h0093909 ER -