Data gathering may be conducted using the direct observation in the
field of interest or done in a controlled environment. Compare and
contrast the reliability of the data collected using these two
Direct observation doesn't rely on any resources to help their studied experiment by not becoming apart of it by any way nor helping it. As for a controlled environment method, the object or person of the experiment is being directed or controlled. Resources are given to the subject or the environment may be set up to help the subject obtain an expected goal. The two techniques are similar because they are both being studied on for a result or outcome.