I know it is common practice in psychology to rely heavily on data from student populations, but the tables 2 and 3 in the paper - the data on stereotype accura

I know it is common practice in psychology to rely heavily on data from student populations, but the tables 2 and 3 in the paper - the data on stereotype accuracy - are almost entirely comprised of college students (except for 1 low-n study that merely included students), predominantly psychology undergraduates. Can we expect that these populations represent average stereotype accuracy, or that their perceptions wouldn't calcify toward exaggeration with time?