Final answer:
The internal working model is an individual's mental representation of the self and relationships based on early experiences with caregivers.
Step-by-step explanation:
The individual's mental representation of the self, attachment figures, and relationships that is based on early experiences with caregivers is referred to as the internal working model. This concept was developed by John Bowlby, who proposed that attachment bonds formed in infancy continue throughout life and influence our relationships. The internal working model includes our expectations of how others will behave and how we should interact with them, based on our early experiences.