We provide conceptual introductions to missingness mechanisms—missing completely at
random, missing at random, and missing not at random—and state-of-the-art methods of …

Nowadays, video games are part of our everyday life, and the number of players is
increasing each day passing by. Thus, understanding what motivations drive people to play …

Resumen en español En las últimas décadas un aspecto central en la discusión sobre la
integración regional es el lugar preponderante otorgado a la integración en infraestructura …

OBJECTIVES: Although the Sport Motivation Scale (SMS), published in 1995, has
demonstrated validity and reliability in multiple studies, the scale has received some …

This article describes the development and validation process for an instrument to assess
goal orientation (an individual disposition toward developing or validating one's ability in …

This study was designed to examine psychological characteristics and their development in
Olympic champions. Ten US Olympic champions (winners of 32 Olympic medals) were …

The requirements for soccer play are multifactorial and distinguishing characteristics of elite
players can be investigated using multivariate analysis. The aim of the present study was to …

The purpose of this paper is to propose a motivational sequence that integrates much of the
intrinsic and extrinsic motivation literature in sport. The proposed motivational …

Abstract [This book is] for all those interested in issues of sport morality.... In particular,
professors and researchers in the social sciences of sport, together with their graduate …

We undertook two studies to determine the validity and reliability of the revised Perceived
Motivational Climate in Sport Questionnaire (PMCSQ-2). In Study 1, 201 female athletes …