Two observers record similar observations on a behavioral rating scale for a group of children they are watching. The researchers have established what kind of reliability?

a. split-half reliability

b. internal reliability

c. test-retest reliability

d. inter-rater reliability

The answer is inter-rate reliability.

Explanation:

Inter-rate reliability is measured by the agreement between raters: a consensus between different researchers guarantees a higher level of accuracy.

It differs from intra-rate relibility, because the former measures the consistency of results among different raters, and the latter is based on results found by the same rater.