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| Other material and links of interest |
| Pavlov Lecture 1 (1924 Version) |
| Watson & Rayner (1920) |
| Siegel & Ellsworth (1986) |
| "Superstition" in the pigeon (1948) |
| The misbehavior of organisms (1961) |
| Positive Reinforcement Tutorial |
| Negative Reinforcement University |
| York University Collection of Classic Psychology Papers |