If modifications are made to standardized testing, not according to a particular protocol but based on student's ability to answer/comply with- test questions, doesn't that in effect invalidate the test completely because modifying the questions and interpreting the results becomes a subjective function of the tester? And in the case of an "IQ test", wouldn't that render the final "number" meaningless because it is not based on any objective testing? If psychological/cognitive testing requires motor skills in an individual who has *no* volitional motor skills, would the results of that test be invalid? Ditto for visual skills and verbal skills? Thanks kindly.