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 the interpersonal functions of emotions; physical and social anhedonia traits; psychological predictors, neural mechanisms and clinical treatment options of anhedonia; a school-wide approach to preventing childhood anxiety; vitamins and minerals as alternative or complementary therapies in depression; self-assessed intelligence and self-reported personality; a critical engagement with social psychological contributions to modifying the health of people and the planet; psychomotor and dopaminergic bipolarity in unipolar depression: experimental findings, conceptual analysis and implications for treatment strategies; and developing an improved reporting system for human rights violations of persons with psychosocial and intellectual disabilities in South Africa.