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.
A group of black children tested in the study revealed equal favorability and negativity biases, regardless of whether they perceived the test faces to be black or white. In other words, the black children showed no pro-black or pro-white bias.