Sibila Marques holds a degree in Psychology from the Faculty of Psychology of the University of Lisbon and a PhD in Social Psychology from ISCTE – University Institute of Lisbon. She is a researcher at the Centre for Research and Social Intervention and an Associate Professor at ISCTE-IUL. She currently serves as Pro-Rector for Inclusion, Well-being, and Quality of Life. She is also the local coordinator of the Erasmus Mundus programme Social Psychology of Transformation (SPOT).

Her work has focused primarily on the application of Social and Community Psychology to the understanding of socially relevant issues, particularly in relation to the health and well-being of communities and individuals. In this context, she has developed research in two priority areas: the Social Psychology of Ageing and the Social Psychology of the Environment.

In these fields, she has presented her work at national and international conferences and has published in peer-reviewed journals with significant impact within the scientific community. She has also participated in European and national research projects in these areas. At ISCTE-IUL, she has served as scientific coordinator of the European projects SIforAGE (FP7) and INHERIT (H2020).

She is also the author of the essay Age Discrimination (Discriminação da Terceira Idade), published by the Francisco Manuel dos Santos Foundation in 2011, and was one of the invited experts for the Global Report on Ageism (2021), in collaboration with the World Health Organization. In 2025, she was distinguished as Woman in Science by Ciência Viva – the Portuguese Agency for Scientific and Technological Culture.