1 Paste the expert ratings
1 row = 1 item · each column = 1 expert (rating +1, 0 or −1) · an item label in the first column is optional
Decision rule
- IOC ≥ 0.50 → keep the item
- IOC < 0.50 → revise or remove
4
Items
3
Kept
1
To revise
IOC per item
| Item | ΣR | N | IOC | Decision |
|---|---|---|---|---|
| Q1 | 2 | 3 | 0.67 | Keep |
| Q2 | 3 | 3 | 1.00 | Keep |
| Q3 | 0 | 3 | 0.00 | Revise / remove |
| Q4 | 2 | 3 | 0.67 | Keep |
Text for your report (Chapter 3)
The content validity of the questionnaire was examined by 3 experts using the Index of Item-Objective Congruence (IOC; Rovinelli & Hambleton, 1977). Of the 4 items, 3 met the criterion (IOC ≥ 0.50), while 1 item scored below 0.50 ("Q3") and was revised following the experts' suggestions.
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