Marco Pereira is Associate Professor at the Faculty of Psychology and Educational Sciences of the University of Coimbra (Portugal) and researcher at the Center for Research in Neuropsychology and Cognitive and Behavioral Intervention (CINEICC). He has completed a Master Degree in AIDS (2006) and received his PhD degree in Health Psychology at the University of Coimbra in 2008. His general area of research is clinical and health psychology, with a focus on applied psychology. He is or has been researcher or external advisor in several national and international studies related to HIV, Hepatitis C, pregnancy and transition to parenthood, and quality of life. His research interests include adult attachment and dyadic/interpersonal processes in the adjustment to different contexts of adversity (e.g., death of a child, HIV serodiscordancy, intimate partner violence, postpartum depression, financial stress), the role of psychological processes (e.g., psychological flexibility, self-compassion, emotional regulation, interpersonal mindfulness) across multiple transitions (e.g., pregnancy and parenthood, transition to higher education), as well as the implementation of transdiagnostic interventions (e.g., Unified Protocol). As a member of the World Health Organization Portuguese Group for Quality of Life Assessment, he participated in the development of the generic versions of the WHOQOL measures (WHOQOL-100; WHOQOL-BREF; EUROHIS-QOL-8), of the HIV Module (WHOQOL-HIV; WHOQOL-HIV-BREF), and of the Spirituality, Religion and Personal Beliefs Module (WHOQOL-SRPB; WHOQOL-SRPB-BREF).