Christopher Comer, Dean
EmeritusFax: (406) 243 6366
Office: Skaggs Bldg 310
Office hours for fall 2016: Tuesday and Thursday 12 - 1 and by appointment
Professor and Chair, Department of Psychology
Psych 320 - Advanced Psychological Research Methods
Psych 595 - Teaching of Psychology
Recent work has concentrated on the development and use of an automated running wheel that can be used as either an operant chamber or in discrete trials paradigms. The effect of effortful responding on persistence is the current focus of this work.
B. A. Psychology: University of Oklahoma, 1972
M. A. Psychology, University of Oklahoma, 1974
Ph. D. Experimental Psychology (Animal Learning), University of Oklahoma, 1976
Field of Study
Animal Learning and Behavior, Research Methods
Craft, B.B., Szalda-Petree, A.D., Brinegar, J.L., & Haddad, N.F. (2007). Effect of various discrimination stimuli on choice behavior in male Siamese fighting fish (Betta splendens). Perceptual and Motor Skills, 104, 575-580.
Kirshenbaum, A.P., Szalda-Petree, A.D., & Haddad, N.F. (2003). Increased effort requirements and risk sensitivity: A comparison of delay and magnitude manipulations. Behavioural Processes, 61, 109-121.
Kirshenbaum, A.P., Szalda-Petree, A.D., & Haddad, N.F. (2002). Increased effort requirements and risk sensitivity: A comparison of delay and magnitude manipulations. Behavioural Processes, 50, 9-17.
Kirshenbaum, A., Szalda-Petree, A.D., & Haddad, N.F. (2000). Risk sensitive foraging in rats: the effects of response-effort and reward-amount manipulations on choice behavior. Behavioural Processes, 50, 9-17.
Karkowski, A., Haddad, N. F., & Szalda-Petree, A. D. (1996). Rat strategies and the interactive schedule: A multidimensional examination of behavior. The Journal of General Psychology 123, 63-73.
Haddad, N. F., Szalda-Petree, A. D., Karkowski, A., Foss, R., & Berger, L. (1994). Wheel-running in discrete trial and operant paradigms under various effort requirements. Physiology and Behavior, 56(3), 487-493.
Szalda-Petree, A. D., Karkowski, A., Brooks, L., & Haddad, N. F. (1994). Monitoring running-wheel movement using a serial mouse and and IBM-compatible system. Behavior Research Methods, Instruments & Computers, 26 (l), 54-56.
Petree, Allen D., Haddad, Nabil F., & Berger, Laurence H. (1992). A simple and sensitive method for monitoring running wheel movement. Behavior Research Methods, Instruments & Computers, 24(3), 412-413.
Williams, Shelly L., Haddad, Nabil F., & Strobel, David A. (1989). Blocking effects in two-choice discrimination tasks in Rhesus monkeys. Psychological Record, 39, 471-481.
Mellgren, R. L., Mays, M. Z., & Haddad, N. F. (1983). Discrimination and generalization by rats of temporal stimuli lasting for minutes. Learning and Motivation, 14, 75-91.
Haddad, N. F., Walkenbach, J., Preston, M. & Strong, R. (1981). Stimulus control in a simple instrumental task: The role of internal and external stimuli. Learning and Motivation, 12, 509-520.
Walkenbach, J. & Haddad, N. F. (1980). The Rescorla-Wagner theory of conditioning: A review of the literature. The Psychological Record, 30, 497-509.
Haddad, N. F., Mellgren, R. L., & Walkenbach, J. (1980). Specific and nonspecific transfer: Effects of nonreward, delay of rewards, and punishment sequences on persistence. Bulletin of the Psychonomic Society, 16, 205-208.
Haddad, N. F., Walkenbach, J., & Goeddel, P. S. (1980). Sequential effects on rats' lever-pressing and pigeons' key-pecking. American Journal of Psychology, 93, 41-51.
Walkenbach, J., Haddad, N. F. (1978). Contrast effects involving procedures other than appetitive reward magnitude shifts: A review of the literature. JSAS, Catalog of Selected Documents in Psychology, 8, 59.
Walkenbach, J., Haddad, N. F., & Mellgren, R. L. (1978). N-length shifts and successive contrast effects. Bulletin of the Psychonomic Society, 11, 83-85.
Seybert, J., Mellgren, R. L., Mays, M., Littlejohn, R. L., & Haddad, N. F. (1978). Effects of partially reinforced intertrial placements: A test of the discrimination hypothesis. Quarterly Journal of Experimental Psychology, 30, 121-132.
Haddad, N. F., & Mellgren, R. L. (1976). Effects of magnitude of reward and intensity or punishment on resistance to extinction. Bulletin of the Psychonomic Society, 7, 449-451.
Haddad, N. F., McCullers, J. C., & Moran, J. D. (1976). Satiation and the detrimental effects of material rewards. Child Development, 47, 547-55
COURSES TAUGHT: 1976-Present
Introduction to Psychology
Introduction to Experimental Psychology
Advanced Experimental Psychology
Learning & Memory
Fundamentals of Learning
Principles of Behavior Modification
Personalized Student Instruction
Writing in Psychology
History & Systems of Psychology
Teaching of Psychology
Assistant Professor of Psychology, University of Montana, 1976-1981.
Associate Professor of Psychology, University of Montana, 1981-1989.
Professor of Psychology, University of Montana, 1989-present.
Chair - Department of Psychology, University of Montana, 1996-2007, and 2010-
Academic Administrator of the Year: University of Montana. 2001-2002
Inspirational Teacher of the Year: University of Montana. 2004-2005
Association for Psychological Science