Students with a wide variety of academic backgrounds and vocational interests find that elective courses in anthropology make a valuable contribution to their university experience. Anthropology is the study of humanity, past and present, in both simple and complex societies. Archeologists reconstruct vanished civilizations from their material remains. Physical anthropologists tell the story of human evolution and biological variation in modern populations. Cultural and social anthropologists study cultures throughout the world in order to understand recurrent regularities in human behavior. Economic systems, political and legal institutions, religious behavior, family organization, child rearing practices and the formation of personality are all elements of culture studied by anthropologists.