There are a few limitations of the t-test that researchers should be aware of. Firstly, the t-test is not designed to control for the effects of the environment. Changes in the environment may affect the results of the test, and as a result, it is not appropriate for use in studies with a significant environmental component. Additionally, t-tests are limited in their ability to determine differences between groups at low levels of significance. This limitation can be problematic when trying to detect small (<0.05) differences between groups. As a result, caution should be used when interpreting findings based on t-tests at low levels of significance. Finally, t-tests are limited in their statistical power; that is, they are less likely to identify statistically significant differences between groups than tests that have greater statistical power.