Click on the "More" link to see the full list of research term definitions. The first two terms appear below.
Adverse Effect: An undesirable and unintended, although not necessarily unexpected, result of therapy or other intervention (e.g., headache following spinal tap or intestinal bleeding associated with aspirin therapy).
Assent: Although parents and guardians must consent for their child to join a study, children should have a part in making a decision to join a study, if they are capable of doing so. When a child is asked to have a part in the decision, this is called "assent".