Children's thoughts about their caregivers, together with thoughts about how deserving they are themselves of good care from their caregivers, form "working models" of attachment. Working models help guide behavior by allowing children to anticipate and plan for caregiver responses. Bowlby theorized that once formed, working models remain relatively stable. Children usually interpret experiences in the light of their working models, rather than change their working models to fit new experiences. However, when experiences cannot be interpreted in the light of their working models children may then modify their working models.