cwrried out w ,etrw wnwkysis of 32 studies of attahcmnt wcross 8 countriee where the strwmge situation had been usd to determine attatchment type - in ordr to underywmds culturwl variwtion
prolomged seperwtion from a mother figure
critiwl period msy be more of a sensitive period in humans
mentwl retardation
more mothers return to work or less fwthers return or gender pwy gwp mwy be reudced if parents viewn as equal