Psychological Testing: History, Principles, and Applications, Global Edition, 7th Edition

“Students tend to respond most favorably to a style which is neither overly complicated nor overly simplistic …The author has struck a balance between the two.” - Peter Spiegel, California State University, San Bernardino

“I really like the way stats are handled and the way the story of testing is told.” - Bradley Brummel, The University of Tulsa

Robert Gregory earned his Ph.D. in clinical psychology from the University of Minnesota where he absorbed a healthy respect for the value of empiricism in psychological testing. He taught at the University of Idaho for 23 years where he also developed a private practice in assessment. In his practice, he specialised in the evaluation of intellectual disability and cognitive impairment. His academic research centered on assessment topics such as subtle cognitive differences in left-handers, the impact of subclinical lead exposure on intelligence, the psychometric qualities of a wide variety of cognitive and personality tests, and meta-analysis. In one phase of his assessment career, he estimates evaluating more than 100 applicants for law enforcement positions. He has taught psychological assessment for 40 years. On 50 separate occasions, he has offered a course featuring one or another of the Wechsler scales (‘Now do this one as quickly as you can, and be sure to tell me when you are finished’).