In response to an unknown trigger, the immune system may begin producing antibodies that instead of fighting infections, attack the body's own tissues. Treatment for autoimmune diseases generally focuses on reducing immune system activity.
What's taught in school. Some of the items in standardized achievement tests measure the knowledge or skills that students learn in school. In certain subject areas, such as mathematics, children learn in school most of what they know about a subject.
IQ Test. By John M. Grohol, Psy.D. An IQ test is a psychological measure of a personâs âintelligence quotientâ (IQ). Intelligence Quotient, or IQ, is a theoretical construct used by psychologists within standardized tests as a means of describing oneâs intelligence level. In the most commonly-administered IQ test â the Wechsler Adult Intelligence Scale (WAIS) â an average score is 100; about 95% of IQ scores fall between 70 and 130.