Yohimbine augmentation , relative to placebo augmentation , resulted in faster improvement and better outcomes on self-report measures of social anxiety disorder severity ( Liebowitz Social Anxiety Scale , d = .53 ) and depressed mood severity ( Beck Depression Inventory , d = .37 ) but not on the clinician-rated measures ( Clinical Global Impressions-Severity Scale , d = .09 ; Clinical Global Impressions-Improvement Scale , d = .25 ) .