Active clinical trials for "Attention Deficit Disorder with Hyperactivity"

The study investigates whether eicosapentaenoic/docosahexaenoic acid supplementation affects behavior and cognition in children with attention deficit hyperactivity disorder.

Attention deficit/hyperactivity disorder is a condition characterized by a decreased attention span, hyperactivity, and/or impulsiveness inappropriate for a certain age. Typically, young children have what are known as subtle neurological signs. These are involuntary movements of one part of the body that occur while the child is making a voluntary movement of another part of the body. This is referred to as synkinesis, or overflow movements. These overflow movements disappear during normal development and are usually gone by the age of 10. However, in children with ADHD these overflow movements tend to be more intense and last long after the age of 10. This leads researchers to believe there is an abnormality in the maturation and development of the brain areas associated with motor activity in children with ADHD. Transcranial Magnetic Stimulation (TMS) is a non-invasive technique that gives information about brain function. It is very useful when studying areas of the nervous system related to motor activity (motor cortex, corticospinal tract, and corpus callosum). A magnetic signal given from a special instrument held close to the patient's head stimulates a small area of the brain that controls a few muscles (for example, the muscles that control one finger). Doctors put electrodes (small pieces of metal taped to areas of the body) over the muscle to measure the electrical activity the muscle produces when it makes a movement. When the magnetic signal activates those muscles the electrodes pick up and record the electrical activity of the movement that the muscles make in response to the magnetic signal. Researchers will study normal children and those diagnosed with ADHD using TMS to find out if the clinical abnormalities of ADHD are associated with a delay or abnormality in maturation of areas of the nervous system responsible for motor activity (motor cortex and corticospinal tract).

The objective of this research is to use functional magnetic resonance imaging (fMRI) with a neuropsychological task to test the prefrontal mechanism of action of the medical food Vayarin.

Children and adolescents with ADHD are impulsive and have difficulties in regulating their behaviors. It has been suggested that a core deficit in inhibitory control may account for dysfunctional behaviors associated with this disorder. Previous research has shown that medication and the self-regulation strategy of making implementation intentions (i.e., if-then plans) are effective in enhancing children's inhibitory control, which is reflected in the behavioral as well as electrophysiological (e.g., Electroencephalogram; EEG) data on a Go/NoGo task in children with ADHD. As suggested by earlier research, however, forming implementation intentions may have different effects on people who are embedded in different cultures. The aim of the present study is to compare the effects of medication and the self-regulation of forming implementation intentions by assessing the behavioral performance and corresponding brain activity during a Go/NoGo task in children and adolescents with and without ADHD under two different cultural contexts. Further, this study also aims at investigating the potential moderating effects of culture on making if-then plans. More important, as we know, this will be the first study to compare the effectiveness of forming implementation intentions on children and adolescents with ADHD in a cross-cultural way, which is meaningful for researchers to explore the degree of its application and expected to provide clinical psychologists an alternative perspective for ADHD treatment in the near future.

The goal of this study is to develop and test a mobile web application to optimize early stimulant medication treatment for children receiving care for Attention/Deficit Hyperactivity Disorder (ADHD) in a publicly-funded mental health clinic.

The purpose of this observational study is to explore the efficacy of methylphenidate hydrochloride in children and adolescents diagnosed with attention-deficit hyperactivity disorder (ADHD) by Kiddie-scheduled for affective disorders (SADS)-present and life time version (K-SADS-PL).

The purpose of this study is to learn more about the functioning of particular types of regions of the brain, specifically, those related to externalizing disorders such as Attention Deficit Hyperactivity Disorder (ADHD), Oppositional Defiance Disorder (ODD), and Conduct Disorder (CD). Brain function of children and adolescents with externalizing disorders such as ADHD, ODD, and CD will be compared to the brain function of those without. Functional Magnetic Resonance Imaging (fMRI) will be used to monitor brain activity at work and at resting states.

The aim of this study is to analyse explicit and implicit emotional information processing abilities in children with attention deficit disorder with or without hyperactivity

The interpersonal problems of adolescents with ADHD may be the most debilitating aspect of their psychopathologic behaviour. This being said, the investigators still do not have a clear understanding of why it is the case that individuals with ADHD have such impaired social and communicative competence. In particular, research has not identified whether the communicative difficulties stems from deficits in taking the perspective of a communicative partner, or in being able to make use of this information in a systematic way. This study will compare adolescents with ADHD to adolescents not diagnosed with ADHD and their performance on a number of social inference and communication tests. This study hypothesizes that persons with ADHD will not perform as effectively as control participants on the social inference and communication tests, and will evidence lower WM score. As well, this study hypothesizes that a working memory/cognitive load task will impede performance on certain social inference and communication tests to a greater extent in the ADHD population than in the control group.

The aims of this study are to evaluate auditory sensitivity in teenagers with ADHD using acoustic reflex thresholds (ART) and to examine the effects of ADHD stimulant medication on ART.