However, research results indicated a low validity of the infant - father strange situation assessment for predicting subsequent
psychosocial development.15 Rather, father - child interactive quality during play or exploration, and sensitive challenges to the young child's competencies seem to be better predictors of child
development.16, 24 Another challenge to attachment research is more a measurement than a conceptual issue: How do behavioural patterns of infant attachment become patterns of verbal discourse
about attachment later?