why is it so hard to create culture-fair test? Most test tend tot reflect what the dominant culture thinks is important. If the test have the time limits, that will bias the test against groups not concerned with the time. If languages differ, the same words might have the different meaning for different language groups. Even pictures can produce bias because some cultures have less experience with drawings and photographs. Within the same culture, different groups could have different attitudes, values and motivation and this could their performance on intelligence test. Items that ask why buildings should be made of bricks are biased against children with little or no experience with brick houses. Question about railroads, furnaces, seasons of the year, distance between cities and so on who be biased against groups who have less experience than others with these contexts. Because of such difficulties in creating culture-fair tests, Robert Stern berg and his colleagues conclude that there are no culture-fair tests, only culture-reduce test.