continuing weakness:Burman (1994) has pointed out that this places a burden of responsibility on mothers and is therefore a controversial topic in individualistic cultures. Additionally, Bowlby underestimates the role of the father, creating an outdated + sexist viewpoint.To support this, Cohn (2014) showed that the number of fathers who stay at home and care for their children has quadrupled over the past 25 years, illustrating how the father can be a primary caregiver, and questioning whether Bowlby's monotropic theory can be generalised to other social and historical settings.