M. Violante Martínez Quintana has a doctorate in Political Sciences and Sociology, Sociology section from UNED in 1988. Associate Professor of Sociology since 1994, in the Department of Sociology III of the Faculty of Political Sciences and Sociology -Madrid-, and currently Technical Advisor of the Center for Sociological Research. His subjects of specialization are Leisure and Tourism -especially Nature Tourism and Tourism Planning and Management-, Sex Tourism, Gender Studies, Absenteeism and Labor Conflicts, Reconciliation of family, work and personal life, Theoretical Paradigms of Social Problems and Motivation and Satisfaction of Master's students at UNED. She has been a visiting professor at the University of Essex (1992), Stanford (1999), and at the Center D’Analyse et D’Intervention Sociologiques in Paris (CADIS, 2009). His publications include the following: (2002) Iniciación a la Sociología: Los fundamentos básicos, ed. Tirant Lo Blanch; (2006) Ocio y Turismo en la sociedad actual. Los viajes, el tiempo libre y el entretenimiento en el mundo globalizado, ed. McGrawHill; (Coord., 2006) Problemas sociales de género en el mundo global, ed. Ramón Arces; (2017) “El turismo de naturaleza: un producto turístico sostenible” rev. Arbor; (2018) “Paisajes culturales como imágenes de destino: percepción y valoración como producto turístico, rev. Pasos; (2020) Eco-cultural Tourism: Sustainable Development and Promotion of Natural and Cultural Heritage”, chapter IntechOpen;