The point of looking at the errors is to see what issues may have occurred when trying to process the information and answer the question in order to evaluate the specific deficit(s).
[5] An example of qualitative analysis is in regard to the Block design test, which measures spatial visualization ability and motor skills.
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.
[11] 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.