Answer
The answer is psychoanalysis, a therapeutic technique developed by Sigmund Freud that aims to uncover unconscious conflicts and repressed thoughts through dialogue. Spock applied this method to understand the underlying emotional and psychological factors that influence children's behavior and emotional well-being. By delving into the subconscious mind of children, he sought to gain insights into their motivations, fears, and desires, thereby enabling him to provide more effective guidance and support.