Katarzyna Tomaszek is the author of many Polish and international publications in the fields of health and the school functioning of children and youth. In her research, she deals with issues of adolescent alienation, school stress and burnout. She is the co-author of Polish adaptation tools for measuring gratitude and for measuring the commitment and burnout of students. She also conducts research on positive pro-development factors from the perspective of the course of human life, i.e., gratitude, humility and a sense of humor.