'increase the validity' is correct and usable in written English.
It can be used in a variety of contexts to express the idea of making something more valid or dependable. For example, "By introducing stricter requirements, we can increase the validity of the results."
On the other hand, to increase the validity of any process, one must consider a much wider array of relevant variables and use intuition and gut instinct.
In order to increase the validity of the perturbed solution, another technique, called Padé approximants, is shrewdly incorporated.
We make several suggestions regarding how original research, through improved design and reporting, might increase the validity and reliability of benefit transfers.
The theoretical bases of previous and contemporary approaches are discussed in an attempt to increase the validity of current proxy assessments.
Using the Delphi approach will probably increase the validity of product positioning in the BCG matrix.
The transcripts were checked by other researchers to increase the validity of the data.
Further steps are required for strength our results and consequently increase the validity of the proposed theoretical contributions.
So as to increase the validity and reliability, all the research instruments were piloted before the main study.
The intracranial width perpendicular to the ICAs could serve to determine the positions of the ICAs and to increase the validity of the estimates.
To increase the validity of our outcome we chose to use a prespecified treatment and rehabilitation protocol, creating a prospective study.
During the entire process, access to multiple analysts and industry representatives was purposefully employed in order to increase the validity of the results.
