Final answer:
The correlation between a test question and other test items can determine its contribution to the overall test validity.
Step-by-step explanation:
True
When determining the contribution of a test question to the overall test validity, one method is to look at the correlations between it and the other test items. This is because if a question has a high correlation with other test items, it is likely measuring the same construct and therefore contributes to the overall test validity. On the other hand, if a question has a low or no correlation with other test items, it may not be measuring the intended construct and does not contribute as much to the overall test validity.