Among the controversial changes anticipated in the newest edition of psychiatry’s manual of mental disorders, is that the thresholds for “generalized anxiety disorder” (GAD) will be loosened; a move some observers say could make it more frequently diagnosed than depression. “Disruptive mood dysregulation disorder? Temper tantrums, in a nutshell,” said Frank Farley, a professor at Temple’s College of Education. “Hoarding disorder — where is the threshold? When does hoarding become ‘mentally sick’? Where’s the tipping point?”