1.   But there never has been such a comprehensive study to test the theory.

2.   He devised a series of experiments to test his theory.

3.   It became possible to test theories about nervous system functions.

4.   Researchers gave workers a questionnaire to test that theory.

5.   Secondly, evolutionary biologists have tested their theories by searching for expected patterns of behaviour across different human cultures.

6.   They carried out a series of experiments to test the theory.

7.   We can test this theory by using matrix isolation and then employing standard techniques such as in the study of stable molecules.

8.   The theory was then tested against the results of the study.

9.   Lecky was a school teacher and had an opportunity to test his theory upon thousands of students.

10.   In which case, how is it that theories are tested by data?