Study of the Effects of Osmotic-Release Oral System (OROS) Methylphenidate (Concerta) on Attention and Memory

The TEA-Ch is a battery of nine subtests designed to assess multiple attentional capacities in children 6-16y.o. The Walk-Don't Walk subtest is a measure of sustained attention and response inhibition. Scores on this subtest can range from 0 to 20 with higher scores representing better performance.

This is a measure of sustained attention & response inhibition for children 6 yrs and older. During this task a series of numbers flash, one at a time, on a screen. The subject is told to press a button every time a "1" is followed by a "9". There are 45 possible correct responses over the 9-minute task. Omission errors are a measure of sustained attention and can range from 0 to 45. Commission errors are a measure of sustained attention and response inhibition can range from zero to hundreds (each time the button is pushed at the incorrect time). Lower scores indicate better performance.

The verbal assessment of working memory uses the digit span reversed component of the Digit Span subtest of the Wechsler Intelligence Scale for Children-IV edition (WISC-IV).Scores could range from 0 to 16 with higher scores indicating better performance.

The TEA-Ch is a battery of nine subtests designed to assess multiple attentional capacities in children 6-16y.o. The Sky Search Dual Task is a measure of sustained attention. Lower scores indicate better performance. There is not a finite range for this test and very high scores can be negative numbers.

The TEA-Ch is a battery of nine subtests designed to assess multiple attentional capacities in children 6-16y.o. The Score DT subtest is a measure of sustained attention. and response inhibition. Scores on this subtest can range from 0 to 20 with higher scores representing better performance.

The TEA-Ch is a battery of nine subtests designed to assess multiple attentional capacities in children 6-16y.o. The Creature Counting subtest is a measure of attentional control. There is not a finite range for this test, but lower scores indicate better performance.

The TEA-Ch is a battery of nine subtests designed to assess multiple attentional capacities in children 6-16y.o. The Map Mission subtest is a measure of selective attention and indicates the number of targets found in one minute. Scores on this subtest can range from 0 to over 70 with higher scores representing improved performance.

The TEA-Ch is a battery of nine subtests designed to assess multiple attentional capacities in children 6-16y.o. The Sky Search subtest is a measure of selective attention. There is not a finite range of scores on this subtest, but lower scores indicate better performance.

The TEA-Ch is a battery of subtests designed to assess multiple attentional capacities in children 6-16y.o. The Opposite Worlds subtest is a measure of attentional control and response inhibition. There is not a finite range of scores on this test. Lower scores indicate better performance..

This is the parent and teacher version of the ADHD Rating Scale-IV. The scale has 2 subscales, one for inattention and one for hyperactivity-impulsivity. The scores provided are percentile scores and can range from 1 to 99 percent. Higher scores indicate more problems in inattention or with hyperactivity-impulsivity

Parents rate 16 possible stimulant side effects on a 10 point likert scale from 0-9 with 0 indicating no side effects and 9 indicating more severe symptoms.