Harold O. Kiessis a Professor Emeritus, Framingham State College, Framingham, Massachusetts. He received his Ph.D. in Experimental Psychology from the University of Illinois, Urbana-Champaign in 1967. After several years as a Research Psychologist for the United States Army studying the impact of climatic variables on human performance, he joined the Department of Psychology at Framingham State College. While at Framingham, Hal developed and taught courses in research methodology and statistical analysis, as well as the historical foundations of psychology. His first textbook,Psychological Research Methods: A Conceptual Approach,coauthored with Dr. Douglas W. Bloomquist (Allyn & Bacon, 1985) focused on integrating statistics and research methodology. Hal authored three editions ofStatistical Concepts for the Behavioral Sciencesbefore joining with Dr. Bonnie Green as coauthor for the current fourth edition. In recent years his teaching interests focused on using computers and the Internet as teaching tools. nbsp; nbsp; Bonnie A. Green, Ph.D. is an associate professor of psychology at East Stroudsburg University. In addition, she is a member of the Statistical Educational Consulting Center at ESU. Fascinated with how humans learn and remember, Bonnie began her academic career with a B.S. in Elementary Education from Penn State in 1986. After teaching elementary school science and math for several years, she returned to graduate school to obtain a M.S. in Experimental Psychology in 1998 and a Ph.D. in 2002 from Lehigh University. Bonnie Green spent a year at Cedar Crest College teaching behavioral statistics and research methods before joining the faculty at ESU in 2003 where she has been teaching and mentoring undergraduate students in behavioral statistics, research methods, and psychometrics.