Subtests were developed for repeated measurements.

Data collection costs lowered.

Subtests have been shown in peer review to be reliable and clinically and ecologically valid.

Extensive support materials available.

Subtests have normative databases gathered from a diverse U.S. population with extended age and education ranges.

Subtests have been shown to be cross-culturally valid.

Subtests are "participant-friendly."

Subtests valid for use with medically ill populations.

Subtests were developed for repeated measurements.
Most CRT subtests have multiple standardized alternate forms that are automatically administered upon re-testing, and the HeadMinder system automatically tracks which forms should be administered next.

Our subtests have been normed on populations that were required to take the tests multiple times, at varying test-retest intervals. This allows for more accurate assessment of cognitive functioning and interpretation of test scores over time. Retest results can be statistically adjusted to account for test-retest reliability and for practice effects as they occur.

HeadMinder subtests have statistical bases that facilitate use of Reliable Change scores to compare individual subjects to their own baseline performances. HeadMinder supports use of both the Reliable Change Index (RCI) and Standardized Regression Based (SRB) methods for Reliable Change calculations.

•	Most other companies' tests only provide normative data for one test instance, and they commonly report test-retest reliability for only one specified test-retest time interval.

Data collection costs lowered.
The CRT does not have to be administered by a neuropsychologist or psychometrician but may be administered by a technician with only two to three hours of training. It takes two to three minutes to register a test taker and introduce him/her to the test. Multiple tests can be administered simultaneously in computer labs. HeadMinder tests are automatically scored, and scoring occurs immediately upon completion of tests. Typically, test batteries require just 10 to 40 minutes. High rates of user acceptance decrease the likelihood of attrition.

Subtests have been shown in peer review to be reliable and clinically and ecologically valid.
HeadMinder provides extensive documentation of reliability and concurrent validity data. Our tests have been shown to be ecologically valid in a number of peer-reviewed papers and other professional forums. See Test Specifications.

Extensive support materials available.
HeadMinder provides extensive administrative and professional support materials.

Subtests have normative databases gathered from a diverse U.S. population with extended age and education ranges.
The influence of demographic characteristics, such as geographic location and ethnicity, are all known quantities for HeadMinder tests. See Test Specifications.

•	Many other companies' tests have not published normative data for large and diverse samples. Age and education norms are often limited in span.

Subtests have been shown to be cross-culturally valid.
HeadMinder subtests have been validated for use with Non-English Speaking Background (NESB) populations, and instructions can be delivered in a number of languages. Our subtests use nonverbal stimuli in order to minimize cross-cultural biases as well as the impact of language of test administration on outcomes.

Subtests are "participant-friendly."
HeadMinder subtests have extensive documentation of user acceptance across age, education, and ethnic groups. The need for computer experience/familiarity on the part of the test taker is minimal, and typing skills are not required. HeadMinder subtests are brief, interesting, and visually engaging and never require multiple baseline assessments for accurate interpretation of repeat test performance. They have valid test administration success rates of more than 98 percent with healthy and clinical populations, and attrition rates in HeadMinder testing studies are low.

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Many other companies' computerized measures require participants to endure multiple baselines and warm-up trials in an attempt to minimize practice effects and to distort weak reliability coefficients. Many traditional measures are tedious, demanding, and lengthy. Participants are often unable and/or unwilling to undergo these tests on multiple occasions. Many other tests do not provide documentation of user-acceptance.

Subtests valid for use with medically ill populations.
HeadMinder subtests have demonstrated high reliability with many diagnostic groups, including Alzheimer's disease, Cancer, AD/HD, head injury, and Schizophrenia, and in a variety of control group conditions.