“…Lowery, 1977). Among them are the pro®le's desirability or favourability (Collins, Dmitruk and Ranney, 1977;Mosher, 1965;Snyder and Shenkel, 1976;Sundberg, 1955;Weisberg, 1970) and the vagueness or generality of the statements (Carrier, 1963;Gauquelin, 1969;Lattal and Lattal, 1967;Manning, 1968;Merrens and Richards, 1970;O'Dell, 1972;Snyder and Larson, 1972;Stagner, 1958;Sundberg, 1955). Important elements that should also be taken into account are attitude and self-perception changeability (Hovland and Janis, 1959) that appears to be related to uncertainty and low self-worth (Baumgardner, 1990;Gollob and Dittes, 1965;Swann, Pelham and Chidester, 1988).…”