The June edition of the journal "Clinical psychology: science and practice" focused on bipolar disorder. This is very valuable and the fact that all the articles are freely viewable in full text makes the publication even more helpful. As Youngstrom & Kendall write in their introductory article (see below) "Knowledge about bipolar disorder is rapidly advancing. One consequence is that current evidence about the diagnostic definitions, prevalence, phenomenology, associated features and underlying processes, risk factors and predictors, and assessment or treatment strategies for bipolar disorder is often markedly different than the conventional wisdom reflected even in recent textbooks and clinical training." Karam & Fayyad (see below for all articles mentioned, with abstracts and links) discuss diagnosis and the boundaries of the bipolar spectrum. Merikangas & Pato review recent research on bipolar epidemiology and write "During the past decade, there has been increasing recognition of the dramatic personal and societal impact of bipolar disorder I and II (DSM-IV).