| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| Marked | Marked | Marked: Much of the subject's speech is illogical (more than four times) | ||
| Mild | Mild | Mild: Occasional instances of illogicality | ||
| Moderate | Moderate | Moderate: Frequent instances of illogicality (three or four times) | ||
| None | None | None | ||
| Questionable | Questionable | Questionable | ||
| Severe | Severe | Severe: Most of the subject's speech is illogical |