“…Since the 1940's, this wording effect has been widely investigated (Bishop, Hippler, Schwarz, & Strack, 1988;Hippler & Schwarz, 1986;Holleman, 1999a;Holleman, 2000;Krosnick & Schuman, 1988;Reuband, 2000;Schuman & Presser, 1981;Waterplas, Billiet, & Loosveldt, 1988). The effect is shown to vary between questions, but across questions a consistent pattern is shown: a meta-analysis of 52 forbid/allow questions administered in different countries and languages (Holleman, 1999b(Holleman, , 2000 showed a mean difference between 'not forbid' and 'yes allow' of 14.2% points, and a standard deviation of 9.85.…”