The phrase "undermine validity" is correct and usable in written English.
You could use it to emphasize the idea that something has weakened or reduced the credibility of an argument or evidence. For example: The errors in the report seriously undermine the validity of the findings.
The students who made up their significant event analyses and wrote what they thought the teacher wanted to read undermined validity.
Heer said that if the hearing proceeded, there would be evidence that he contended would undermine the validity of a pact said to have been signed on Nov. 2, 2000, by Ted, John Henry and Claudia Williams proclaiming their desire to have their bodies frozen.
These new studies do not undermine the validity of the magisterial past research on hot hands, but expand and augment it, Dr. Yaari and the other authors say, adding even more human complexity.
On specific allegations of malpractice by Jones in the handling of weather station data from China, the panel did not comment directly, but concluded more generally: "Crucially, we find nothing in the behaviour on the part of CRU scientists that is the subject of allegations... to undermine the validity of their work".
But this does not necessarily undermine the validity of the bank's view that the impulses pushing up inflation will prove short-lived, whereas the effect of spare capacity will be more enduring.Just how far below its potential output the economy is operating is a vexed question.
On the other hand, longer instrument could undermine the validity as well due to students' fatigue.
These problems undermine the validity of the subspace assumption and thus the recognition performance deteriorates significantly.
"The judgment serves to further undermine the validity of the SPL commission," said Green.
He added: "The judgment serves to further undermine the validity of the SPL Commission into the use of EBTs.
The question is what other contextual constraints and pressures may also undermine the validity of a woman's (apparent) consent.
