Senior Research Scientist
Department of Pharmacology and Toxicology
Jacobs School of Medicine and Biomedical Sciences
Drug abuse, animal and human models of impulsivity, sensation seeking, behavioral neuroscience, and the experimental analysis of behavior.
Spencer, S. V., Hawk, L. W., Jr., Richards, J. B., Shields, K., Pelham, W. E., Jr., & Waxmonsky, J. G. (2009). Stimulant treatment reduces lapses in attention among children with ADHD: The effects of methylphenidate on intra-individual response on time distributions. Journal of Abnormal Child Psychology, 37, 805-816.
Krall, C. M., Richards, J. B., Rabin, R. A., & Winter, J. C. (2008). Marked decrease of LSD-induced stimulus control in serotonin transporter knockout mice. Pharmacological Biochemical Behavior, 88, 349-357.
Baschnagel, J. S., Hawk, L. W., Jr., Colder, C. R., & Richards, J. B. (2007). Motivated attention and prepulse inhibition of startle in rats: Using conditioned reinforcers as prepulses. Behavioral Neuroscience, 121, 1372-1382.
Shiels, K., Hawk, L.W., Jr., & Richards, J. B. (2007). Individual differences in conditioned reward: The observing procedure. Personality and Individual Differences, 42, 15-25.
Acheson, A., Farrar, A. M., Patak, M., Hausknecht, K. A., Kieres, A. K., Choi, S., de Wit, H., & Richards, J. B. (2006). Nucleus accumbens lesions decrease sensitivity to rapid changes in the delay to reinforcement. Behavioural Brain Research, 173, 217-228.
de Wit, H., & Richards, J. B. (2004). Dual determinants of drug abuse: Reward and impulsivity. Nebraska Symposium on Motivation, 50, 19-44.
Lejuez, C. W., Aklin, W. M., Jones, H. A., Richards, J. B., Strong, D. R., Kahler, C. W., & Read, J. P. (2003). The Balloon Analogue Risk Taking Task (BART) differentiates smokers and nonsmokers. Experimental and Clinical Psychopharmacology, 11, 26-33.
Sabol, K. E., Richards, J. B., Broom, S. L., Roach, J. T., & Hauskneckt, K. (2003). Effects of stimulus salience and methamphetamine on reaction time in the rat: Central tendency vs. distribution skew. Behavioral Pharmacology, 14, 489-500.
Feola, T. W., de Wit, H., & Richards, J. B. (2000). Effects of d-amphetamine and alcohol on a measure of behavioral inhibition in rats. Behavioral Neuroscience, 114, 838-848.
Richards, J. B., Zhang, L., Mitchell, S. H., & de Wit, H. (1999). Delay and probability discounting in a model of impulsive behavior: Effect of alcohol. Journal of the Experimental Analysis of Behavior, 71, 121-143.
Richards, J. B., Mitchell, S. H., de Wit, H., & Seiden, L. S. (1997). Determination of discount functions in rats with an adjusting amount procedure. Journal of the Experimental Analysis of Behavior, 67, 353-366.