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Basic Characteristics

  • Description

Conner's continuous performance test (CPT) is a measure used to assess attention and vigilance. The test is commonly administered to those suspected of having attentional disorders such as ADHD or trouble with neurological functioning. During this task letters of the alphabet are presented one at a time for 250 MS. The subject is instructed to press the key board for every letter except the letter "X". Subjects will complete 6 blocks each containing 3 sublocks of 20 letters each. For each block the sublocks have different interstimulus intervals (ISIs) of 1, 2, or 4s. Order of ISIs varies across blocks. Letters are approximately 1" in size, and bold faced. Responses provide a measure of variance for both accuracy of responding and reaction time. The higher the variance, the more inconsistent the participants attention. The measure is appropriate for ADHD research and clinical assessments for subjects over 6 years of age. Response patterns generated by participants give an understanding of present deficits such as inattentiveness, impulsivity, activation, etc depending on the pattern.

  • History
  • References

Advokat et al, 2007. Conner's continuous performace test of college students with ADHD, psychotic disorders, cognitive deficits, or no diagnosis PMID 17242420

Related Information

  • Cognitive construct associated with this task (vote for your favorite, or nominate a new construct label by editing this page):
  • Indicators (dependent variables, conditions, or contrasts; measurement variables used for analysis) associated with this task (vote or nominate by editing this page): response times, change in reaction time speed and consistency, signal detection theory statistics, overall statistics, omission errors, and commission errors.
  • Closely related pages (vote or nominate related pages by editing this page):
  • CNP Level

External Resources

Task Details

  • Task Structure (please given an overview of the task procedures here [i.e., overall design, block, trial, and within-trial event structure and timing])
    • procedure
      • block: 6 blocks each containing 3 sublocks of 20 letters ea.
      • trial: 30 completed trials
  • Stimulus Characteristics
    • sensory modality (e.g., visual, auditory, somatosensory, gustatory, olfactory): visual
    • functional modality (e.g., linguistic, spatial, numerical, categorical):
    • presentation modality (e.g., human examiner, paper, computer display, headphones, speaker): computer display
  • Response Characteristics
    • response required -
      • effector modality (e.g., vocal, manual, pedal): manual
      • functional modality (e.g., words, drawing, writing, keypress, movement): mouse press or keypress
    • response options (e.g., yes/no, go/no-go, forced choice, multiple choice [specify n of options], free response)-
    • response collection (e.g., examiner notes, keyboard, keypad, mouse, voice key, button press)- mouse and/or keyboard
  • Assessment/Control Characteristics
    • timing- letters are presented one at a time for 250 ms, interstimulus intervals (ISIs) of 1, 2, or 4s, approximately 14 minutes to complete
      • monthly cycle dependent??
      • circadian dependent??
    • control assessment
      • 5 senses??