Van Ijzendoorn & Kroonenberg, meta-analysis of 32 studies from 8 countries, used the strange situation.
it was found secure attachment most common in all. Japan & Israel (collectivist) higher levels of insecure resistant. Germany (individualistic) higher levels of insecure-avoidant. Variation within cultures 1.6x greater than between cultures.
could be argued that is mainly countries not cultures
sample biased, 27/32 individualistic cultures
strange situation based off americans, not generalised to collectivist cultures, imposedetic
Bowlby claims global culture could be due to mass media
reliable, large sample, 1800 children, decreases due to chance.