Research Methods In Psychology, 9th Edition by John J. Shaughnessy (Author), Eugene B. Zechmeister (Author), Jeanne S. Zechmeister (Author) Now in its ninth successful edition, Research Methods in Psychology unites students’ passion for psychology with their interest in answering questions about behavior and mental processes. The text introduces students to an array of methodological tools psychologists use in their research -- from the basics of scientific inquiry, ethical conduct, and controlled observation to correlational, experimental, and applied approaches to research. Throughout, students learn research methods within the context of classic and contemporary studies from diverse areas of psychology.