This continuing series presents original research results on the leading edge of psychology. Each article has been carefully selected in an attempt to present substantial results across a broad spectrum. This book reviews research on cognitive illusions and its impact on reasoning, judgement and decision-making; glutamatergic neurotransmission through N-methyl-D-Aspartate (NMDA) receptor and its role in the pathophsyiology of schizophrenia; humanistic psychology and the mental health worker; inefficient neural control of attention in adolescent chronic cannabis abuse; behavioural choice paradigms and their mathematical representation; epistemological and clinical conceptions of perversion; critical variables in cognitive-behavioural therapy for paediatric and adult obsessive-compulsive disorders; cyber-bullying risk and protective factors; stigma and substance use disorders; and a transworld eogism and empathy study.