To understand what the score on an IQ test means, there are a few key terms that you should know: 1  Bell Curve: When IQ scores are plotted on a graph, they typically follow a bell-shaped curve. The peak of the bell occurs where the majority of the scores lie. 2  Mean: The average score.
Key difference: Disability is an injury that restricts the functions or movements of a person. Disorder is an illness that causes disruption to the functions of a person. Disability is the consequence of an impairment caused to a person. It is essentially a medical condition, which doesn't allow a person to function in a normal manner.
Medical sign. A medical sign is an objective indication of some medical fact or characteristic that may be detected by a patient or anyone, especially a physician, before or during a physical examination of a patient. For example, whereas a tingling paresthesia is a symptom, erythema is a sign. Symptoms and signs are often nonspecific, but often combinations of them are at least suggestive of certain diagnoses, helping to narrow down what may be wrong. In other cases they are specific even to the point of bei