The Conners' Continuous Performance Test (CPT) is a neuropsychological task that has repeatedly been shown to differentiate ADHD from normal groups. Several variables may be derived from the Conners' CPT including errors of omission and commission, mean hit reaction time(RT), mean hit RT standard error, d', and β. What each CPT parameter actually assesses has largely been based upon clinical assumptions and the face validity of each measure (e.g., omission errors measure inattention, commission errors measure impulsivity). This study attempts to examine relations between various CPT variables and phenotypic behaviors so as to better understand the various CPT variables. An epidemiological sample of 817 children was administered the Conners' CPT. Diagnostic interviews were conducted with parents to determine ADHD symptom profiles for all children. Children diagnosed with ADHD had more variable RTs, made more errors of commission and omission, and demonstrated poorer perceptual sensitivity than nondiagnosed children. Regarding specific symptoms, generalized estimating equations (GEE) and ANCOVAs were conducted to determine specific relationships between the 18 DSM-IV ADHD symptoms and 6 CPT parameters. CPT performance measures demonstrated significant relationships to ADHD symptoms but did not demonstrate symptom domain specificity according to a priori assumptions. Overall performance on the two signal detection measures, d' and β, was highly related to all ADHD symptoms across symptom domains. Further, increased variability in RTs over time was related to most ADHD symptoms. Finally, it appears that at least 1 CPT variable, mean hit RT, is minimally related to ADHD symptoms as a whole, but does demonstrate some specificity in its link with symptoms of hyperactivity.
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Achenbach, T. M., & Edelbrock, C. (1983). Manual for the Child Behavior Checklist and Revised Child Behavior Profile. Bulington, VT: University of Vermont, Department of Psychiatry.
American Psychiatric Association. (1994). Diagnostic and statistical manual for mental disorders (4th edition). Washington, D.C.: Author.
Angold, A., and Costello, E. J. (1995). A test–retest reliability study of child-reported psychiatric symptoms and diagnoses using the Child and Adolescent Psychiatric Assessment (CAPA-C). Psychological Medicine, 25, 755-762.
Angold, A., and Costello, E. J. (2000). The Child and Adolescent Psychiatric Assessment (CAPA). Journal of the American Academy of Child and Adolescent Psychiatry, 39, 39-48.
Angold, A., Prenergast, M., Cox, A., Harrington, R., Simonoff, E., and Rutter, M. (1995). The Child and Adolescent Psychiatric Assessment (CAPA). Psychological Medicine, 25, 739-753.
Barkley, R. A. (1988). Child behavior rating scales and checklists. In M. Rutter, A. H. Tuma, & I. Lann (Eds.), Assessment and diagnosis in child psychopathology (pp. 113-155). New York: Guilford Press.
Barkley, R. A. (1991). The ecological validity of laboratory and analogue assessment methods of ADHD symptoms. Journal of Abnormal Child Psychology, 19, 149-178.
Barkley, R. A., DuPaul, G. J., & McMurray, M. B. (1990). Comprehensive evaluation of attention deficit disorder with and without hyperactivity as defined by research criteria. Journal of Consulting and Clinical Psychology, 58, 775-789.
Chee, P., Logan, G., Schachar, R., Lindsay, P., & Wachsmuth, R. (1989). Effects of event rate and display time on sustained attention in hyperactive, normal, and control children. Journal of Abnormal Child Psychology, 17, 371-391.
Conners, C. K. (1994a). The Conners Continuous Performance Test. Toronto, Canada: Multi-Health Systems.
Conners, C. K. (1994b). The continuous performance test (CPT): Use as a diagnostic tool and measure of treatment outcome. Paper presented at the Annual Meeting of the American Psychological Association, Los Angeles, CA.
Conners, C. K., Epstein, J. N., Angold, A., & Klaric, J. (2003). Continuous Performance Test Performance in a Normative Epidemiological Sample. Journal of Abnormal Child Psychology, 31, 557-564.
Corkum, P. V., & Siegel, L. S. (1993). Is the continuous performance task a valuable research tool for use with children with attention-deficit-hyperactivity disorder? Journal of Child Psychology and Psychiatry, 34, 1217-1239.
Eliason, M. J., & Richman, L. C. (1987). The Continuous Performance Test in learning disabled and nondisabled children. Journal of Learning Disabilities, 20, 614-619.
Epstein, J. N., Conners, C. K., Sitarenios, G., & Erhardt, D. (1998). Continuous performance test results of adults with Attention Deficit Hyperactivity Disorder. The Clinical Neuropsychologist, 12, 155-168.
Grunebaum, H., Weiss, J. L., Gallant, D., & Cohler, B. J. (1974). Attention in young children of psychotic mothers. American Journal of Psychiatry, 131, 887-891.
Halperin, J. M., Sharma, V., Greenblatt, E., & Schwartz, S. T. (1991). Assessment of the Continuous Performance Test: Reliability and validity in a nonreferred sample. Psychological Assessment, 3, 603-608.
Hinshaw, S. P. (1987). On the distinction between attentional deficits/hyperactivity and conduct problems/aggression in child psychopathology. Psychological Bulletin, 101, 443-463.
Inoue, K., Nadaoka, T., Oiji, A., Morioka, Y., Totsuka, S., Kanbayashi, Y., et al. (1998). Clinical evaluation of attention-deficit hyperactivity disorder by objective quantitative measures. Child Psychiatry Human Development, 28, 179-188.
Jerison, H. J., Pickett, R. M., & Stenson, H. H. (1965). The elicited observing rate and decision processes in vigilance. Human Factors, 7, 107-128.
Klee, S. H., & Garfinkel, B. D. (1983). The computerized continuous performance task: A new measure of inattention. Journal of Abnormal Child Psychology, 11, 487-495.
Lassiter, K. S., D'Amato, R. C., Raggio, D. J., Whitten, J. C., & Bardos, A. N. (1994). The construct specificity of the Continuous Performance Test: Does inattention relate to behavior and achievement? Developmental Neuropsychology, 10, 179-188.
Leth-Steenson, C., Elbaz, Z. K., & Douglas, V. I. (2000). Mean response times, variability, and skew in the responding of ADHD children: a response time distributional approach. Acta Psychologica, 104, 167-190.
Losier, B. J., McGrath, P. J., & Klein, R. M. (1996). Error patterns on the continuous performance test in non-medicated and medicated samples of children with and without ADHD: A meta-analytic review. Journal of Child Psychology and Psychiatry, 37, 971-987.
Mackworth, J. F. & Taylor, M. M. (1963). The d' measure of signal detectability during vigilance-like situations. Canadian Journal of Psychology, 17, 302-325.
McGee, R. A., Clark, S. E., & Symons, D. K. (2000). Does the Conners' Continuous Performance Test aid in ADHD diagnosis? Journal of Abnormal Child Psychology, 28, 415-424.
O'Dougherty, M., Neuchterlein, K. H., & Drew, B. (1984). Hyperactive and hypoxic children: Signal detection, sustained attention, and behavior. Journal of Abnormal Psychology, 93, 178-191.
Schachar, R., Logan, G., Wachsmuth, R., & Chajczyk, D. (1988). Attaining and maintaining preparation: A comparison of attention in hyperactive, normal, and disturbed control children. Journal of Abnormal Child Psychology, 16, 361-378.
Sergeant, J. & Van der Meere, J. (1990). Additive factor method applied to psychopathology with special reference to childhood hyperactivity. Acta Psychologica, 74, 277-295.
Swets, J. A. & Pickett, R. M. (1982). Evaluation of diagnostic systems: Methods from signal detection theory. New York: Academic Press.
Werry, J. S., Elkind, G. S., & Reeves, J. C. (1987). Attention deficit, conduct, oppositional, and anxiety disorders in children, III: Laboratory differences. Journal of Abnormal Child Psychology, 15, 409-428.
Zahn, T. P., Kruesi, M. J. P., & Rapoport, J. L. (1991). Reaction time indices of attention deficits in boys with disruptive behavior disorders. Journal of Abnormal Child Psychology, 19, 233-252.
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Epstein, J.N., Erkanli, A., Conners, C.K. et al. Relations Between Continuous Performance Test Performance Measures and ADHD Behaviors. J Abnorm Child Psychol 31, 543–554 (2003). https://doi.org/10.1023/A:1025405216339
- CPT performance parameters