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Linacre’s Rating Scale Guidelines
| Guideline | Decision |
|---|---|
| At least 10 observations of each category | Yes |
| Regular observation distribution | Yes |
| Average measures advance monotonically with category | Yes |
| OUTFIT mean-squares less than 2.0 | Yes |
| Step calibrations advance | Yes |
| Ratings imply measures and measure imply ratings | Yes |
| Step difficulties advance by at least 1.4 logits | Yes |
| Step difficulties advance by less than 5.0 logits | Yes |
Source: Linacre (2002)
