This volume provides a multi-disciplinary perspective on grit, its measurement, manifestation and development. Specifically, it aims to provide a comprehensive and balanced retort to the criticises associated with the construct within the contemporary positive psychological literature. These critiques are firmly cantered around the lack of consensus in girt’s conceptualization, measurement, and management as well as how it differs from other psychological constructs such as conscientiousness, diligence or determination. This lack in consensus resulted in various new ‘theories’, psychometric instruments, and interventions to rapidly emerge from other disciplines. These developments could lead to either seminal advancements in the understanding of grit or lead grit to becoming yet another victim of the ‘jingle-jangle fallacy’. Therefore, this volume aims to provide a thorough multidisciplinary reappraisal- and consolidation of the nature, function, measurement and implications of grit in order to effectively advance the science of achievement. Written by a team of multi-disciplinary experts in fields ranging from neuroscience, sociology, and education to human resource management and psychology, this volume firmly positions Grit within the discipline of positive psychology’s nomological lexicon.