This landmark volume offers a collection of conceptual papers andempirical research studies that investigate the dynamics of languagelearning motivation from a complex dynamic systems perspective. Thecontributors include some of the most well-established scholars fromthree continents, all addressing the question of how we can understandmotivation if we perceive it as continuously changing and evolving ratherthan as a fixed learner trait. The data-based studies also provide usefulresearch models and templates for graduate students and scholars in thefields of applied linguistics and SLA who are interested in engaging withthe intriguing area of examining language learning in a dynamic vein.