Biographies of scientists are often used in the teaching environment, both in textbooks and in course contents - sections from the lives of scientists are often included to encourage students to pursue and enjoy science. This research investigated the effect of social content biographical texts of scientists on students' attitudes towards science courses. The research was a mixed-method study and consisted of 51 science teachers. The participants were determined according to a convenience sampling method. Focus group interviews, repertory grid technique, and individual interviews were used to collect data in the study. Through focus group interviews with teachers, it was discussed what kind of changes biographical texts might make to students' attitudes to science. Later, 51 teachers explained the social biographical texts to their students and observed the changes in the students. Based on their observations, they scored the repertory grids. Finally, an individual interview was held with fifteen teachers. As a result, it has been determined that social biographical texts were able to increase students' interest, motivation and questioning skills, while able to decrease their anxiety.