Sentence examples for is difficult to test from inspiring English sources

It is a theory, and, like most theories about American society, it is difficult to test on the national level.

And it is difficult to test two experimental drugs in combination because the regulatory system is geared to assessing a single drug at a time.

What students gain through a college education is difficult to test for: the habits of mind and behavior that make up a culture of professionalism.

From the sparse details available, it is difficult to test the creators' claim that the free lessons are "as effective as professional e-learning packages such as Rosetta Stone with a price tag of $500".

It is difficult to test the validity of these assumptions in a real life situation.

However, the correctness of simplifications based on these assumptions is difficult to test.

This hypothesis is difficult to test, however, because of a poor fossil record from this time period in Africa.

However, this specific point of view is difficult to test due to the unavailability of experimental data.

Elastic constants are important for internal stress measurement, yet the value for thin films is difficult to test by mechanical methods.

Because P. vivax can't be grown in the lab, it is difficult to test how the extra copy of the gene might change the parasite's behavior.

Although the "multiple-hit" hypothesis has been prominent in the literature for some time, it is difficult to test the idea with human epidemiology studies, he says.