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CTIP™

Computerized Test of Information Processing

Tom N. Tombaugh, Ph.D., Laura Rees, Ph.D.

Evaluate the extent various neurological injuries have affected the speed information is processed in


CTIP™

Overview

Overview

The CTIP is a fast, effective tool developed to evaluate the extent that various neurological injuries have affected the speed information is processed in certain individuals.

  • Can be used with individuals ranging from 15 to 74 years of age
  • Applicable to clinical and research settings
  • Functionality to aid in the detection of malingering of cognitive deficits frequently associated with Traumatic Brain Injury - by providing converging evidence that a respondent is not putting forth maximum effort

Key Areas Measured


Key Areas Measured

  • Simple Reaction Time
  • Choice Reaction Time
  • Semantic Search Reaction Time

Quick Reference

Age

Age

15 to 74

Administration Type

Administration Type

Self

Administration Time

Administration Time

15 Minutes

Qualification Level

Qualification Level

C

Format(s)

Format(s)

Software (Administration & Scoring)

Quick Reference

Age

Age

15 to 74

Administration Type

Administration Type

Self

Administration Time

Administration Time

15 Minutes

Qualification Level

Qualification Level

C

Format(s)

Format(s)

Software (Administration & Scoring)

How To Use

How To Use

Reliability and Validity

Reliability and Validity

Normative Data

Normative Data

The CTIP consists of three computerized subtests that measure reaction time. The subtests progressively increase the amount of information being processed in order to systematically record individual reaction times and the reports provide summarized scores for each subtest. Total administration time takes approximately 15 minutes and the CTIP runs on the MHS SmartLink system where users have the ability to choose from clinical or research reports.

The CTIP has very good test-retest reliability. Subjects were tested over 4 successive time intervals, with the greatest degree of reliability found over 2- to 4-week test-retest intervals (test-retest correlations ranging from .61 to .85).

Since the CTIP was designed to help the clinician track recovery or evaluate the effects of various types of interventions, information concerning practice effects is critical. Research has shown that practice effects do not occur within a single CTIP session or when the CTIP is administered several times over several weeks. The stable performance of the CTIP renders it an ideal test to be used clinically to track recovery and to assess the effects of various types of interventions.

Normative non-clinical data for the CTIP was collected over a six year period and across a number of sites (community, university, city, and rural). The sample was drawn from major regions of the United States and Canada and was representative of the populations in regards to gender, age, ethnicity, urban/rural residence, and geographic distribution. Percentile scores are derived from a large, cognitively-intact normative sample of 386 people. The sample ranges in age from 15–74 years and is stratified into four age groups; 15–24 years, 25–44 years, 45–64 years, and 65–74 years of age.