Cohen, Ronald Jay. , Psychological testing and assessment : an introduction to tests and measurement / Ronald Jay Cohen, Mark E. Swerdlik. - 6th ed. - 1 volume (various pagings) : illustrations, color ; 27 cm.+ 1 solution manual. ISBN: 0072887672 Subjects--Topical Terms: Psychological tests --Textbooks.Psychometrics --Textbooks. LC Class. No.: BF176 / .C63 2005