“…A good deal of research has been generated by Byrne's (1961Byrne's ( , 1964 hypothesis that high-NA individuals characteristically approach threatening stimuli, whereas low-NA subjects try to avoid threat (e.g., are perceptually defensive). A number of investigators have tested this notion by examining NA's relation with the approach/avoidance of sexually provocative material (Burns & Tyler, 1976;Haney, 1971Haney, ,1974aHaney, , 1974bParis & Goodstein, 1966;Pawlowski, 1979;Schill, 1969;Schill, Emanuel, Pedersen, Schneider, & Worchowiak, 1970;Weinberger, Schwartz, & Davidson, 1979), taboo words (Bitterman & Kniffin, 1953;Cowen et al, 1957;Hoffman, 1970), and gruesome, painful, or death-related stimuli (Carroll, 1972;Haley, 1974;Hare, 1966;Lewinsohn, Bergquist, & Brelje, 1972;Matheson, 1976;Piorkowski, 1967). These studies have used a wide variety of designs and measures and, although a few inconsistencies do appear, the results have been overwhelmingly negative.…”