Sudden gains in cognitive therapy for depression: a replication and extension.
Hardy Gillian E, Cahill Jane, Stiles William B, +3 more·Journal of consulting and clinical psychology
Of 76 clients receiving 8-20 sessions of cognitive therapy (CT) in a joint university and a national health service clinic, 31 experienced sudden gains that appeared very similar to those first reported in clinical trials of CT by T. Z. Tang and R. J. DeRubeis (1999) and subsequently replicated in other studies. The su…