After a person has been diagnosed with schizophrenia in a family, the chance for a sibling to also be diagnosed with schizophrenia is 7 to 9 percent. If a parent has schizophrenia, the chance for a child to have the disorder is 10 to 15 percent. Over 250,000 diagnosed cases in Britain. 2  Rates of schizophrenia are generally similar from country to countryabout .5% to 1 percent of the population (there are variations-but the variance is difficult to track due to differing measuring standards in many countries, etc.).
View Full Document. Test Bias â A test bias is a systematic difference in the meaning of test scores amongst different groups. There are internal and external ways to identify test score bias. Test Fairness â This refers to how a test is used.
Culture-Fair Test Definition. A culture-fair test is test designed to be free of cultural bias, as far as possible, so that no one culture has an advantage over another. The test is designed to not be influenced by verbal ability, cultural climate, or educational level. Purpose