“…Researchers have found, however, that over half of the adult population in this country has difficulty manipulating and controlling iconic images (Macoby & Jacklin, 1974;McGee, 1979). Further, the lack of this ability not only may hinder a person's vocational pursuits (Smith, 1964;Mitchelmore, 1980) but also may hinder a subject's creative thinking potential (Paivio, 1970;Holliday, 1975).…”