Final answer:
Sullivan's theory of personality centers around the concepts of interpersonal dynamism, self-system, and prototaxic mode.
Step-by-step explanation:
The concepts at the heart of Sullivan's theory of personality are: Interpersonal dynamism, Self-system, Prototaxic mode. Sullivan's theory focused on the ways in which our interactions with others shape our personality. Interpersonal dynamism refers to the importance of social relationships in forming our sense of self. The self-system represents our internal beliefs and attitudes, while the prototaxic mode refers to a state of experiencing the world without clear differentiation between self and others.