QUESTION 15 Steele and Aronson (1995), were able to provide evidence against the biological intellectual inferiority hypothesis proposed to explain the underperformance of African Americans by showing that? O White participants only underperformed on the test when it was labeled as a difficult verbal test. OBlack participants only underperformed on the test when it was labeled as a difficult verbal test. Black participants only underperformed on the test when it was labeled as intellectually diagnostic. White participants only underperformed on the test when it was labeled as intellectually diagnostic. QUESTION 16 Curvilinear relationships are one example of non-linear relationships that can exist in correlational research and are characterized by U-shaped scatter plots. What is one reason a curvilinear relationship may exist? O Selection Bias. O Non-random sampling. A potential third unobserved variable. The Directional problem. 1 poin