Table 4.

Ethnic group distribution of respondents per experimental group

Experimental group	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
% of black respondents per group	48.1	52.3	53.4	48.2	47.3	44.7	46.8	45.7	48.6	47.0	47.7	49.1	48.7	50.9	48.7	49.1
% of white respondents per group	51.9	47.7	46.6	51.8	52.7	55.3	53.2	54.3	51.4	53.0	52.3	50.9	51.3	49.1	51.3	50.9