“…During that time at least 20 large-scale group treatment studies, enrolling 60 or more patients, and several smaller group studies including at least 10 participants, were published (see, for example, Basso, Capitani, & Vignolo, 1979;Vignolo, 1964;Wertz et al, 1986). Unlike the findings of psychotherapy studies, the results of these group studies largely showed that treatment results in general improvement in language, although, in some cases the treatment effects were not particularly strong or were lacking (Lincoln et al, 1984).…”