Problem
This is a description of a validation study. Identify any potential problems that could affect the outcome of the study. c. A developmental psychologist devises a test for social maturity in children. The test is administered to 50 students at a preschool, and parents and teachers are notified of their scores. Teachers are requested to observe the children carefully for the next three months and to keep anecdotal records on each child's behavior that would be useful in assessing level of social maturity. On the basis of these records, the psychologist ranks the children on the level of social maturity and rank orders them on the basis of their test scores. These ranks are correlated by the Spearman rank order correlation coefficient, and it is quite high.