Final answer:
Unscored interval IOA is a measure used to assess the agreement between observers when rating behavior. It is calculated by dividing the number of unscored intervals where all observers agree by the total number of unscored intervals, then multiplying by 100 to express it as a percentage.
Step-by-step explanation:
Unscored interval IOA (interrater agreement) is a measure used to assess the agreement between two or more observers when rating behavior. It is calculated by dividing the number of unscored intervals where all observers agree by the total number of unscored intervals, and then multiplying by 100 to express it as a percentage.
For example, let's say you have two observers rating the same behavior and they agree on 8 out of 10 unscored intervals. The unscored interval IOA would be (8/10) * 100 = 80%.
This measure helps to determine the reliability and consistency of observers' ratings, particularly when scoring behavior on an interval-based scale.