IRCT20201103049254N1 IRCT 2020-12-28 Tehran University of Medical Sciences Effect of Methylphenidate on understanding intentionality in ADHD children Evaluation of the effect of Methylphenidate on neural correlate of understanding intentionality in children with attention-deficit hyperactivity disorder {ADHD) 2020-10-03 anticipated 20 Complete https://irct.ir/trial/52059 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Supportive. 4 Attention-deficit hyperactivity disorder. Intervention group: participants have ADHD and receive six weeks of medication with Methylphenidate 0.5 -1mg/kg/day divided into three daily doses (1mg per kg maximum dosage). In this study Methylphenidate tablets (Novartis company) are used. To evaluate the effect of Methylphenidate on neural correlate of understanding intentionality, magnetic resonance brain imaging (fMRI) and cognitive assessments (cognitive Tasks and questionnaires) will be performed before and six weeks after the start of treatment.. Yes - There is a plan to make this available What will be shared: Information of the main (primary outcome) and the secondary outcomes like neuronal networks reorganization outcome and cognitive assessments can be shared. When: 6 months after publication of results To whom: Research data will be available for the researchers of universities and scientific institutes. Conditions: The data will be available when the samples are taken out, all the stages of the project are completed and finalized, and the results are published. Where to obtain: Dr. Mehdi Tehrani-Doost Tehranid@tums.ac.ir How to obtain: In order to receive the information, firstly the applicants send the formal application to the correspondent of the present proposal, Dr. Mehdi Tehrani-Doost, and then they will be informed of the details of the data reception (including timing and the way of addressing the available data like email or in-person). Comments: