Results of the pharmacological class questionnaire
| Drugs and Doses Administered | Responses | |||||||
|---|---|---|---|---|---|---|---|---|
| Placebo/Blank | Opiates Antagonist | Opiate | Barbiturates/Benzodiazepine | Phenothiazines | Hallucinogens | Antidepressants | Stimulants | |
| mg/70 kg | ||||||||
| Hydromorphone | ||||||||
| 0.375 | 2 | – | – | 1 | – | – | – | 3 |
| 0.75 | – | – | 1 | 3 | – | – | – | 2 |
| 1.5 | – | – | 3 | 2 | – | – | – | 1 |
| 3.0 | – | – | 5 | 1 | – | – | – | – |
| Pentazocine | ||||||||
| 7.5 | 1 | – | – | 1 | – | – | 1 | 3 |
| 15 | 1 | – | – | 1 | – | – | 1 | 3 |
| 30 | – | – | 3 | – | 1 | – | 1 | 1 |
| 60 | – | – | 1 | 3 | – | – | 1 | 1 |
| Butorphanol | ||||||||
| 0.75 | – | – | – | 3 | – | – | 2 | 1 |
| 1.5 | – | – | 1 | 2 | – | – | – | 3 |
| 3 | – | – | 1 | 2 | – | 2 | 1 | – |
| 6 | – | – | – | 2 | – | 3 | 1 | – |
| Nalbuphine | ||||||||
| 3 | 1 | – | 2 | – | 1 | – | 1 | 1 |
| 6 | – | – | 2 | 2 | – | – | 1 | 1 |
| 12 | – | – | 2 | 2 | – | – | 2 | – |
| 24 | – | – | – | 1 | 1 | 1 | 3 | – |
| Buprenorphine | ||||||||
| 0.075 | 1 | 1 | 2 | – | – | – | 2 | – |
| 0.15 | 2 | – | 2 | 1 | – | – | 1 | – |
| 0.3 | 1 | – | 1 | 1 | – | – | 1 | 2 |
| 0.6 | 1 | – | 4 | 1 | – | – | – | – |
Entries represent the number of subjects identifying each administered drug condition as falling in each pharmacological category. Data are the subjects’ last identification choice from each experimental session. Barbiturate and benzodiazepine identifications are combined. No responses were given for other drug classes listed on the questionnaire. A [–] indicates zero responses.