| Supplemental Media |
| Time |
Description |
| 1:35 |
Pavlov Apparatus
Links to an external site. |
| 4:17 |
Graph: Spontaneous Recovery
Links to an external site. |
| 5:52 |
Video: Little Albert
Links to an external site. |
| 9:42 |
The Far Side: Phobias
Links to an external site. |