Recent studies found that overactivity (increased goal-directed activities) may be as important as mood change (elevated and/or irritable mood) for the diagnosis of mania/hypomania (on family history and psychometric grounds), questioning DSM-IV-TR criteria always requiring mood change and listing overactivity among the other symptoms. The aim of the study was to find out if overactivity was at least as important as mood change for the diagnosis of hypomania.