Chow pays lip service (but not much more!) to Type I errors
and thus opts for a hard (all-or-none) .05 level of significance
(Superego of Neyman/Pearson theory; Gigerenzer 1993). Most
working scientists disregard Type I errors and thus utilize a soft
.05 level (Ego of Fisher; Gigerenzer 1993), which lets them report
gradations of significance (e.g., p < .001).