In Chapter One, Masayo Uji PhD presents a study conducted with the goal of identifying characteristics of narcissism and its related issues which impair adults mental lives, in particular, focusing on interpersonal relationships. Next, Chapter Two by Carlo Lazzari discusses a study on borderline personality disorder and mental health professionals expertise on significant themes regarding the management of patients with the disorder. In Chapter Three, Hubert Suszek critiques Dialogical Self Theory and the methods of psychotherapy based on this model. Chapter Four by Susanne Thielen discusses the therapeutic concept of SELWA. Cindee Quake-Rapp, PhD, Laura Stimler, and Leslie Reed provide a review of both standardised and non-standardise measures used to diagnose sensory processing disorders in Chapter Five. Chapter Six by Giulio DUrso, Irene Petruccelli, Adriano Schimmenti, and Ugo Pace focuses on the function of attachment in developing relationships during adolescence and the origin of bullying. In Chapter Seven, Celestyna Grzywniak, PhD closes the book by presenting signs of invalid auditory processing and its influence on brain function.