Fig. 9

Percentage of biology majors (black bars) versus nonmajors (white bars) who think one of the following statements fits best their position concerning evolution: A = hearing about evolution makes me appreciate the factual explanation about the origin of life on Earth and its place in the universe, B = hearing about evolution makes no difference to me because evolution and creationism are in harmony, C = do not know enough to say, D = hearing about evolution makes me uncomfortable because it is in conflict with my faith. Comparisons within institutions: a RWU biology majors (n = 237) versus nonmajors (n = 239), Chi-square = 8.651, df = 3, P = 0.03; asterisk indicates sign test two-tail pairwise comparison P ≤ 0.05. b PC biology majors (n = 212) versus nonmajors (n = 143), Chi-square = 0.026, df = 1, P = 0.87; combined student responders (mean of biology majors + nonmajors) for A vs. B differ, sign test two-tail P ≤ 0.05. c RWU within-biology-majors comparisons: F = freshman (n = 93), So = sophomore (n = 74), J = junior (n = 33), Sr = senior (n = 37), Chi-square = 17.663, df = 6, P = 0.007; linear regression choice A: r = 0.98, P = 0.014, choice B: r = 0.98, P = 0.013. d PC within-biology-majors comparisons: F = freshman (n = 70), So = sophomore (n = 34), J = junior (n = 50), Sr = senior (n = 58), Chi-square = 9.335, df = 3, P = 0.02; linear regression choice A: r = 0.99, P = 0.007, choice B: r = 0.99, P = 0.007