contamination of the Adult by the Parent as "prejudice" and contamination of the Adult by the Child as "delusion". A healthy individual is able to separate these states. Yet, Harris argues, a functioning person does need all three ego states to be present in their psyche in order for them to be complete. Someone who excludes (i.e. blocks out) their Child completely cannot play and enjoy life; while someone who excludes their Parent ego state can be a danger to society (they may become a manipulative psychopath who does not feel shame, remorse, embarrassment or guilt). Harris also identifies from his medical practice examples of individuals with blocked out Adult ego states, who were psychotic, terrified and varied between the Parent ego state's archaic admonitions about the world and the raw emotional state of the Child, making them non-treatable by therapy. For such cases, Harris endorses drug treatments, or electro-convulsive therapy, as a way to temporarily disrupt the disturbing ego states, allowing the "recommissioning" of the Adult ego state by therapy. Harris reports a similar approach to treating bipolar disorder. The second half of the book begins by briefly describing the six ways that TA practitioners recognize individuals use to structure time, to make life seem meaningful. Harris continues by offering practical case studies showing applications of TA to marriage and the raising of both children and adolescents. This section of I'm OK, You're OK concludes as Harris describes when TA can be relevant to an individual's life, and how and by whom it might be delivered. He promotes the idea that TA is not just a method for specialists, but can be shared and used by many people. Having described such a structured method of dealing with the challenges of human psychology, the final two chapters of the book discuss the question of improving morality and society. In particular, he asks, if people are not to succumb to domination by the Parent ego state, how can individuals enlightened through TA know how they should live their lives? Starting from his axiomatic statement I'm OK, You're OK, he acknowledges that accepting it at face value raises the same philosophical dilemmas as the problem of evil does for believers in a just, omnipotent God. Harris continues to explore aspects of Christianity with reference to TA, together with more generalized questions about the nature of religion. The final chapter of I'm OK,