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.
Lesson Summary. Cultural bias in testing refers to a situation where the scores on a test are significantly higher or lower and are better able to predict the future performance of one cultural group than it is the rest of the population.he difference in the test scores is due to cultural bias in the test, not the ability of the LGBT students. Since the test is culturally biased toward LGBT students, the professor should not give the assessment to this population, since it does not produce results that accurately reflect the abilities of LGBT students.