Current interventions aimed at improving health and increasing engagement in exercise often cluster individuals into groups based on collective characteristics or norms in order to change a behavior. The challenge is to design interventions customized to a single individual based on his or her unique behavior, situation, and characteristics. More recent and rigorous statistical methods may be more appropriate for testing complex hypotheses pertaining to health and exercise behaviors. This book reviews multiple more rigorous and less widely used multivariate methods and measures for assessing...