This diagram is a metaphor which represents our personality structure. The Parent ego state is "borrowed" or learnt from our parents, teachers and other significant adults when we were young. Some of the messages we absorbed are useful to us and others not depending on whom we borrowed the thoughts, feelings and behaviours from.
The Adult ego state is the rational, objective data processing centre of our personalities. This sees, hears, thinks and finds solutions to problems in the "here-and-now". The solutions are factual and neither judgemental (Parent) or based on emotions (Child).
The Child ego state is the seat of our emotional thoughts, feelings and behaviours. When In Child ego state we connect with our feeling memories from the past.
In my next blog I will look at the Functional model, how we communicate with the world and the positive and negative aspects of our personalities expressed through the 3 ego states.