The study of motivation has been experiencing a renaissance of research activity recently. This book discusses the psychology, strategies and impact on performance of motivation. Some of the topics included in this book are testing motivational processes in commercial weight-loss program users; the relationship between internal marketing, motivation and satisfaction at work; the effects of gender differences on motivation to learn English; the influence of strategies and motivation on achievement; and person-centred approach as a part of the humanistic paradigm for motivation in sport settings.