Table 1.
Experiment | Dependent variable | Male | Female | Control | F statistics, P values, and effect sizes |
Experiment 1 (n = 346) | Predicted intensity (1 = not at all, 7 = very strong) | Five male hurricanes | Five female hurricanes | ||
4.386 (0.822) | 4.186 (0.907) | F(1,344) = 18.055, P < 0.0001, ɳ2 = 0.050 | |||
Experiment 2 (n = 108) | Perceived risk (1 = not at all, 7 = very risky) | Hurricane Alexander | Hurricane Alexandra | Hurricane (control) | |
4.764 (1.086) | 4.069 (1.412) | 4.048 (1.227) | F(2,102) = 3.652, P = 0.029, ɳ2 = 0.064 | ||
Experiment 3 (n = 142) | Evacuation intention (1 = evacuate immediately, 7 = stay home) | Hurricane Christopher | Hurricane Christina | ||
2.343 (1.212) | 2.939 (1.538) | F(1,138) = 6.543, P = 0.012, ɳ2 = 0.044 | |||
Experiment 4 (n = 100) | Evacuation intention (1 = certainly will follow, 7 = certainly will not follow) | Hurricane Danny | Hurricane Kate | ||
2.160 (1.344) | 2.900 (1.658) | F(1,96) = 4.469, P = 0.037, ɳ2 = 0.043 | |||
Experiment 5 (n = 274) | Evacuation intention (1 = very unlikely to follow, 7 = very likely to follow) | Hurricane Victor | Hurricane Victoria | Hurricane (control) | |
5.861 (1.275) | 5.391 (1.614) | 5.278 (1.552) | F(2,268) = 3.796, P = 0.024, ɳ2 = 0.027 | ||
Experiment 6 (n = 201) | Evacuation intention (1 = very unlikely to follow, 7 = very likely to follow) | Hurricane Alexander | Hurricane Alexandra | ||
6.061 (0.882) | 5.586 (1.152) | F(1,197) = 11.055, P = 0.001, ɳ2 = 0.053 |
Numbers in parentheses are SDs. Experiment 1, 346 participants reported similar predictions of the intensity across five hurricanes with a male’s name and across five hurricanes with a female’s name, and we therefore collapsed them. A one-way repeated-measure ANOVA was conducted. Experiments 2–6, the mean estimations are based on main effects of the gender of hurricane name in two-way ANOVAs, with the gender of the hurricane name and participants’ sex as independent variables. It should be noted that using ANCOVAs with the gender of hurricane name as a predictor and participants’ sex as a covariate generated almost identical statistical results. Effect sizes are presented with ɳ2 and their interpretation is analogous to R2.