Lívia Mathias Simão, Ph.D., is Associate and Senior Professor at the Institute of Psychology of the University of São Paulo, Brazil, where she founded and presently co-coordinates the Laboratory of Verbal Interaction and Knowledge Construction. Her main research interests concern issues embracing the ontological construction of human subjectivity in I-Other-World relationships from the perspective of the Semiotic-Cultural Constructivism in Psychology. This approach emphasizes issues regarding the psycho-philosophical notions of alterity, temporality and disquieting experiences. She has internationally published articles, chapters, co-edited books and takes part in editorial boards of international journals of her research area.