Fig. 1

Percentage of RWU (black bars) versus PC (white bars) students who consider one of the following explanations about the origin and development of life on Earth should be taught in science classes: A = evolution, B = equal time to evolution, creationism, intelligent design, C = do not know enough to say. Comparisons between institutions: a biology majors (RWU = 237, PC = 212), Chi-square = 1.077, df = 2, P = 0.58. b Nonmajors (RWU = 239, PC = 143), Chi-square = 9.0, df = 2, P = 0.01; asterisk indicates sign test two-tail pairwise comparison P ≤ 0.05. c Biology freshman (RWU n = 93, PC n = 70), Chi-square = 0.307, df = 2, P = 0.85. d Biology sophomore (RWU n = 74, PC n = 34), Chi-square = 1.459, df = 2, P = 0.48. e Biology junior (RWU n = 33, PC n = 50), Chi-square = 8.282, df = 2, P = 0.016. f Biology senior (RWU n = 37, PC n = 58), Chi-square = 0.260, df = 2, P = 0.87