Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

California Computerized Assessment Package

  • Eric N. MillerEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_1272




The California Computerized Assessment Package (CalCAP; 1999) presents a series of brief reaction time tasks designed to assess speeded information processing and psychomotor functioning. The standard CalCAP consists of four Simple and six Go-No Go reaction time subtests that require 20–25 min to complete. The individual reaction time measures were designed to assess a number of cognitive domains, including speed of processing (reaction time), lexical discrimination (real word vs. nonsense word), rapid visual scanning, form discrimination and matching, working memory (1-back and 2-back tasks), and sustained and divided attention. Each task includes a practice session that must be completed with 100% accuracy to proceed to the main 2-min procedure, a method that ensures that subjects understand the task instructions and that minimizes practice effects in longitudinal study designs. Subjects are asked to focus on a display field and respond only to specific...

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References and Readings

  1. Berg, D. (1994). Adults’ reaction time as affected by age and education level. B.A. Honours Thesis supervised by Dr. Frank Spellacy, University of Victoria.Google Scholar
  2. Budzinski, L. M. (1994). An exploration of simple and choice reaction times in children. B.A. Honours Thesis supervised by Dr. Frank Spellacy, Victoria, B.C., University of Victoria.Google Scholar
  3. Chang, L., Ernst, T., Speck, O., Petal, H., DeSilva, M., Leonido-Yee, M., et al. (2002). Perfusion MRI and computerized cognitive tests abnormalities in abstinent methamphetamine users. Psychiatry Research, 114, 65–79.PubMedCrossRefGoogle Scholar
  4. Gonzalez, R., Heaton, R. K., Moore, D. J., Letendre, S., Ellis, R. J., Wolfson, T., et al. (2003). HIV Neurobehavioral Research Center Group. Computerized reaction time battery versus a traditional neuropsychological battery: Detecting HIV-related impairments. Journal of International Neuropsychological Society, 9, 64–71.CrossRefGoogle Scholar
  5. Hessen, E., Lossius, M. I., Reinvang, I., & Gjerstad, L. (2008). Improvement in speeded cognitive processing after anti-epileptic drug withdrawal – a controlled study in mono-therapy patients. Progress in Neurotherapeutics and Neuropsychopharmacology, 3, 199–209.CrossRefGoogle Scholar
  6. Hjalmarsen, A., Waterloo, K., Dahl, A., Jorde, R., & Viitanen, M. (1999). Effect of long-term oxygen therapy on cognitive and neurological dysfunction in chronic obstructive pulmonary disease. European Neurology, 42, 27–35.PubMedCrossRefGoogle Scholar
  7. Miller, E. N. (1999). CalCAP California computerized assessment package manual (2nd ed.). Los Angeles: Norland Software.Google Scholar
  8. Miller, E. N. (2008). CalCAP California computerized assessment package. Retrieved 16 Oct 2008 from http://www.calcaprt.com
  9. Miller, E. N., Satz, P., & Visscher, B. (1991). Computerized and conventional neuropsychological assessment of HIV-1 infected homosexual men. Neurology, 41, 1608–1616.PubMedCrossRefGoogle Scholar
  10. Stordal, K. I., Lundervold, A. J., Egeland, J., Mykletun, A., Asbjornsen, A., Landro, N. I., et al. (2004). Impairment across executive functions in recurrent major depression. Nordic Journal of Psychiatry, 58, 41–47.PubMedCrossRefGoogle Scholar
  11. Van Hoof, E., Coomans, D., De Becker, O., De Meirleir, K., & Cluydts, R. (2002). Hyperbaric oxygen therapy for chronic systemic infections in chronic fatigue syndrome. International Journal of Psychophysiology, 45, 82–83.Google Scholar
  12. Volkow, N. D., Chang, L., Wang, G. J., Fowler, J. S., Leonido-Yee, M., Francesci, D., et al. (2001). Association of dopamine transporter reduction with psychomotor impairment in methamphetamine abusers. American Journal of Psychiatry, 158, 377–382.PubMedCrossRefGoogle Scholar
  13. Waterloo, K., Ingebrigtsen, T., & Romner, B. (1997). Neuropsychological function in patients with increased serum levels of protein S-100 after minor head injury. Acta Neurochirurgica, 139, 26–32.PubMedCrossRefGoogle Scholar

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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Palm SpringsUSA