Intelligence tests and aptitude tests are of course given routinely in all cases where there was any question of the adequacy of intellectual endowment and resources. For the study of the effects of comic books, complete tests for reading ability were found to be of crucial importance. Many statements about children's reading have been made off and on which are not based on a really full and specific study of reading by the various tests devised for this purpose. The harmful effect of comic-book reading on children's ability to read is a special chapter and a sorry one.
A test which is no longer used as much as it should be, the Association Test, we found particularly useful. The associations to words which are complex indicators may reveal preoccupations and fantasies which cannot be obtained on a conscious level, certainly not by questioning. In cases where children are accused of serious delinquencies, the Association Test functions like a "lie detector" test and has helped us to reconstruct what really happened.