Department of Behavioral Sciences Methodology;
Faculty of Psychology;
University of Barcelona;
Barcelona;
Spain 3Institute for Brain;
Cognition and Behaviour (IR3C);
University of Barcelona;
Barcelona;
Spain;
Division of Research and Graduate Studies;
Faculty of Higher Education Iztacala;
National Autonomous University of Mexico;
Mexico City;
Mexico;
Quality; of; Life; Elderly; WHOQOL-OLD; Psychometric; Properties; Mexico;