 He is a member of the American Philosophical Association (APA), the Croatian Philosophical Association, and the Philosophy of Science Association.During his academic career he has taught courses in Philosophy of Science, Philosophy of Mind, Logic, Probability and Scientific Method, Contemporary Issues in Bioethics, Critical Thinking, Introduction to Philosophy of Science and Social Science, Theory of Knowledge, Introduction to Philosophy, Morality and Evolution, Science and Society, Genetics and Psychology, Philosophy and Environmental Issues, and Ethics.In his first article, "Heritability and Causality" (Sesardic 1993), Sesardic argues that the environmentalist criticism of hereditarianism greatly exaggerate in claiming that the explanation of human behavior in terms of genes is faced with methodological problems and flaws.