The Supremacy Clause is found in Article VI, Paragraph 2 of the U.S. Constitution, and it establishes the relationship between federal and state power by making federal law the highest in the land and bounding all states, federal officers and judges to it. This means that in case of a conflict between state and federal laws, the federal laws is the one that shall prevail.
Answer: The results may be due to a CEILING EFFECT effect.
Explanation: The ceiling effect is defined as a phenomenon whereby an independent variable (noise level) no longer has an effect on a dependent variable (reading comprehension).
