Limitation - confounding variables
P - One limitation of cross - cultural research is the impact of confounding variables on findings
E - Studies conducted in different countries are not usually matched for methodology when they are compared in reviews or meta-analyses. Sample characterised such as poverty, age, social class and urban/rural make-up can confound results
E - Environmental variables might also differ between studies and confound results. For example, the size of the room and the availability of interesting toys might mean less visible proximity-seeking because of room size might make a child more likely to be classified as avoidant
L - This means that looking at attachment behaviour in different non-matched studies conducted in different countries may not tell us anything about cross cultural patterns of attachment