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| A. A disturbance of at least six months during which at least eight of the following are present: |
| 1. Often figets with hands or feet or squirms in seat (in adolescents [or adults] may be limited to sunjective feelings of restlessness). |
| 2. Has difficulty remaining in seat when required to do so. |
| 3. Is easily distracted by extraneous stimuli. |
| 4. Has difficulty awaiting turn in games or group situations. |
| 5. Often blurts out answers to questions before they have been completed. |
| 6. Has difficulty following through on instructions from others. |
| 7. Has difficulty sustainging attention in tasks or play activities. |
| 8. Often shifts from one uncompleted activity to another. |
| 9. Has sifficulty playing quietly. |
| 10. Often talks excessively. |
| 11. Often interrups or intrudes on others. |
| 12. Often does not seem to listen to what is being said to him or her. |
| 13. Often loses things necessary for tasks or activities at school or at home. |
| 14. Often engages in physically dangerous activites without considering possible consequences. |
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| NOTE: The above items are listed in descending order of discriminating power based on data from a national field trial of the DSM-III-R criteria for disruptive behavior disorders. |
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| B. Onset before the age of seven. |
| C. Does not meet the criteria for a pervasive developmental disorder. |
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