“…Turning to the other two stages of SD, namely hierarchy construction, and desensitization itself, it appears that a great deal more freedom in procedures is possible than Wolpe thought. There are now many studies which fairly convincingly allow the following statements to be made: group SD is as effective as individual SD (e.g., Ihli and Garlington, 1969;Mann and Rosenthal, 1969); SD may be accelerated and massed rather than taken slowly and spaced out (e.g., Suinn, Edie, and Spinelli, 1970;Suinn and Hall, 1970); the anxiety-hierarchy may be proceeded through at random with respect to anxiety-arousing properties of stimuli (e.g., Miller and Nawas, 1970); and standard hierarchies (Ihli and Garlington, 1969) and even standardized SD programmes as a whole are feasible (e.g., Nawas, Fishman, and Pucel, 1970). There are persistent suggestions that SD(R) may be superior to SD(1) (e.g., Barlow, Leitenberg, Agras, and Wincze, 1969) and at last some empirical evidence is available that SD may generalize from the laboratory to real-life (e.g., Cotler and Garlington, 1969;Ihli and Garlington, 1969).…”