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All scores are presented both as raw and as quotient scores. The basis for statistical analysis is the same as that used for mot IQ tests; all quotient scores have a mean of 100 and a standard deviation of 15. Applying these familiar interpretive guidelines makes it easy for you to interpret results.

IVA's scores are divided into four categories: Attention, Response Control, Attribute and Validity. The primary diagnostic scales are the Full Scale Response Control Quotient and Full Scale Attention Quotient scores.

These Response Control Quotient scores are derived from visual and auditory Prudence, Consistency and Stamina scales.

1. Prudence is a measure of impulsivity and response inhibition as evidenced by three different types of errors of commission.

2. Consistency measures the general reliability and variability of response times and is used to help measure the ability to stay on task.

3. Stamina compares the mean reaction times of correct responses during the first 200 trials to the last 200 trials. This score is used to identify problems related to sustaining attention and effort over time.

The Full Scale Attention Quotient is derived from separate Auditory and Visual Attention Quotients.

The Attention Quotient scores are based on equal measures of visual and auditory Vigilance, Focus and Speed.

1. Vigilance is a measure of inattention as evidenced by two different types of errors of omission.

2. Focus reflects the total variability of mental processing speed for all correct responses.

3. Speed reflects the average reaction time for all correct responses throughout the test and helps identify attention processing problems related to slow discriminatory mental processing.

The Fine Motor Regulation scale provides additional information by recording off-task behaviors with the mouse, including multiple clicks, spontaneous clicks during instruction periods, anticipatory clicks and holding the mouse button down. In behavioral terms, the Fine Motor Regulation score quantifies fidgetiness and restlessness associated with small motor hyperactivity.

IVA's Attribute scores provide you with data regarding the client's learning style. These scales are:

1. Balance indicates whether the test taker processes information more quickly visually or aurally, or is equally quick in either modality.

2. Readiness indicates whether the test taker processes information more quickly when the demand is quicker or when it is slower. This scale can provide a subtle measure of inattention when the test taker just "can't quite keep up" with the demand.

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Carolyn Robertson is a certified Neurotherapist. She is not a licensed physician. EEG-Neurofeedback services are not licensed by the State of California and are considered alternative or complementary to healing arts services that are licensed by the State of California. EEG-Neurofeedback services involve learning to change your own behavior utilizing feedback to modify your brain wave patterns. That feedback is provided by equipment that monitors and shows brain wave activity. The theory of treatment of EEG-Neurofeedback services is based on 40 years of research conducted in university settings across the country and outside the United States. EEG-Neurofeedback is a combination of operant conditioning and biofeedback. Further explanation can be found on this website.