strange situation shows very good inter-rater reliability
bick et al found 97% of agreement in one team, this may be because strange situations take place under controlled conditions and because behavioural categories are easy to observe so they were confident infants show high levels of separation anxiety
2 limitations of ainsworths
artificial in ways that distort behaviour (mums may act different when being observed compared to how they are at home)
culturally bias towards westernised ideas of attachment, it was designed by an American psychologist so it could be argued that other cultures have different attachment behaviours like Japanese people
How many episodes are in Ainsworth's Strange Situation study?