D. Matsumoto et al., Do between-culture differences really mean that people are different? A look at some measures of cultural effect size, J CROSS-CUL, 32(4), 2001, pp. 478-490
Statistically significant differences in culture means may or may not refle
ct practically important differences between people of different cultures.
To determine whether differences between culture means represent meaningful
differences between individuals, further data analyses involving measures
of cultural effect sizes are necessary. In this article the authors recomme
nd four such measures and demonstrate their efficacy on two data sets from
previously published studies. They argue for their use in future cross-cult
ural research as a complement to traditional tests of mean differences.