Table 3.

Summary of methods used to investigate knowledge acquisition in the included studies (n=15).

Type of knowledge acquisition measure and measure of knowledge acquisitiona			Times reportedb, n (%)
CBTc knowledge test
	Multiple-choice itemsd	3 (20)
	True-or-false items	2 (13)
	Multiple-choice + true-or-false itemsd	1 (7)
Mental health literacy test
	Multiple-choice items	1 (7)
	True-or-false items	1 (7)
	Helpfulness ratings	1 (7)
	Multiple-choice items + helpfulness ratings	1 (7)
	True-or-false items + vignettes	1 (7)
Questionnaire measure
	Perceived learning (single item)	4 (27)
	Perceived knowledge of specific treatment components (multi-item)	2 (13)

^aKnowledge tests and questionnaire measures were completed by the participants in all studies.

^bNumbers do not add up to 15 as some studies include more than one measure of knowledge acquisition.

^cCBT: cognitive behavioral therapy.

^dIn addition to the total number of correct answers, 50% (3/6) of the studies reporting CBT knowledge tests reported weighted scores based on the level of certainty associated with a given response.