Another limitation is that Bowlby’s theory is based on an association.Lewis analysed 500 interviews with young people,maternal deprivation was a poor predictor of future offending and the ability to form close relationships in adolescence.Even if there is a link there’s other reasons for it such as maternal deprivation may be due to growing up in poverty.There this matters as it suggests that maternal deprivation may be one of the reasons for later offending behaviour,but not the only reason.