The depression checklist replicates the Research Diagnostic Criteria (14, Table 5). Finally, evidence suggests that two simple questions can perform remarkably well in case finding in primary care settings (15). The questions are “During the past month, have you often been bothered by feeling down, depressed, or hopeless?” and “During the past month, have you often been bothered by little interest or pleasure in doing things?” This recalls the successful use of visual analogue scales (VAS) for rating depression; we review the VAS as a pain measure in Chapter 9 and for other topics in Chapter 10. Correlations between VAS measures and full depression scales can be high, suggesting that a simple VAS may be useful in many applications. One review of VAS in measuring depression quoted correlations between the VAS and the Beck Depression Inventory in four studies ranging from 0.53 to 0.76; correlations with the Hamilton Rating Scale for Depression ranged from 0.63 to 0.79 (three studies) and correlations with the Zung Self-rating Depression Scale ranged from 0.51 to 0.83 (16, Table 1).