Answer:
In this case, the researcher is concerned with whether the neurological test is capable of incremental validity.
Step-by-step explanation:
The lack of the neurological exams of the boy presented above, can compromise the incremental validity of the tests that the researcher is using in the research with the boy, because these exams to promote more specific information, than the tests.
In this case, there is great concern about the incremental validity of the tests. This incremental validity is used to validate the ability to determine a result for the research using the chosen evaluation method, determining whether the information given by the test is sufficient to determine a conclusion about the boy.