“…These results have not been found in several other studies, however (Baker, 1967;Beijk-Docter & Elshout) 1969). In addition, a number of other studies have produced data on this issue (Beck, 1970;Duvall, 1969;Gardner, Holzman, Klein, Linton, & Spence, 1959;Goodenough & Karp, 1961;Harpenau, 1967;Imam, 1973;Keiser, 1969;Klein, 1963;Mendelsohn, Griswold, & Anderson, 1966;Mohr, 1965;Rosett, Robbins, & Watson, 1968;Schimek & Wachtel, 1969;Valinsky, 1971;Weiss, 1970;. 1965).…”