We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMethodological issues in negative symptom trials.AuthorsMarder SR; Daniel DG; Alphs L; Awad AG; Keefe RSPublicationSchizophrenia bulletin, 2011, Vol 37, Issue 2, p250ISSN1745-1701Publication typearticleDOI10.1093/schbul/sbq161