P: :( of cross-cultural research is the impact of confounding variables on findings.
E: Studies from diff countries are often not matched for methodology when they're combined in reviews or meta-analyses, leading to confounding by sample characteristics & environmental factors.
E: Variation in factors like poverty, social class, and environ can distort result can all have an effect of attachment behaviour observed in the Strange Situation
L: Hence, this => that comparing attachment behaviour across non-matched studies may not provide meaningful insights into cross-cultural attachment patterns.