The modifications made to standardized tests can include repetition of test questions and allowing more time than allotted in the standardized version. Many standardized tests have been subject to process-based modifications. There are many types of modifications that have been created for the battery approach, but not all of them are listed. Some of the main modifications are listed below:   The Boston process approach is known to be a flexible battery approach when assessing brain function of a person, meaning that there can be many different standardized tests that can be administered to the individual depending on their existing deficiencies. Data interpretation from this approach does not necessarily look at the final score on the tests, rather it focuses on what kind of errors were made by the individual during the assessment. Results from the Boston process approach allow the clinician to make inferences about what brain areas may not be working properly in the individual. The clinician can then also make inferences about how severe the damage to the brain is by determining whether there is low-level or higher-level deficits in their cognitive processing. A major criticism of this approach is on its external validity. The problems occur due to differences in outcome between administrators. There have also been issues in regards to the lack of consistent patterns and methods for each diagnosis (Milberg & Hebben, 2013). This neuropsychological flexible battery approach allows for administrators to choose which tests they want to use, however, it makes room for the lack of consistency in choosing the tests for each type of neurological issue. Accordingly, there are questions about the empirical validity of the Boston Process Approach. With that being said, the Boston Process Approach revolutionized the field of clinical psychology and is still widely used today (Milberg & Hebben, 2013).