There is supporting evidence for the importance of internal working models, as presented by Bailey et al. Through the observation of 99 mothers and the recording of their children's attachment type using the Strange Situation, the researchers found that poor, insecure attachments coincided with the mothers themselves reporting poor attachments with their own parents. Therefore, this suggests that internal working models are likely to be formed during this first, initial attachment and that this has a significant impact upon the ability of children to become parents themselves later on in life.