The phrase "a valid criterion" is correct and usable in written English.
It can be used when discussing standards or principles that are acceptable for evaluating or judging something.
Example: "In assessing the effectiveness of the program, we must establish a valid criterion to measure its success."
Alternatives: "an acceptable standard" or "a legitimate measure".
Of course, the cat-test is (arguably) not a valid criterion for character assessment.
Fast growth is a valid criterion in making career decisions, but it's far from the only one, and it doesn't always go hand in hand with being socially conscious.
It comprises a valid criterion for rational and sustainable planning, management and protection of natural spaces.
A qualitative evaluation of the right ventricle (RV) dimension was used, considering as abnormal a RV/LV end diastolic diameter >0.9 in the AP4 view and >0.7 in the SC view[23], or a normal RV size as 60% of the LV size at the end diastole (that is a valid criterion both for AP4 and subcostal views).
If vowel identity was indeed a valid criterion for the choice of rhyming words in Old Chinese times, this could be seen as strong evidence for the superiority of the reconstruction system by Baxter and Sagart (2014) closely followed by the system of Starostin (1989).
In future studies it will be important to characterise the exact nature of phantom sensations in congenital amputees, whether these are related to the organisation of the sensorimotor cortex, and whether the absence of a phantom limb is a valid criterion for saying that the body schema does not contain a representation of the missing limb.
Voice onset and spelling errors in the first two tests (WRT and PWRT) constitute a valid criteria for the diagnosis of reading impairment [32], [33], [62], [63].
The trend of the decision towards prophylactic surgery, while interesting, is not a valid criteria for judging the DA.
A wear-time of ≥ 10 hours/day for ≥ four days was used as the criterion for a valid measure.
It has provided (and still provides) a practical and valid criterion of irreversible loss of function of the organism as a whole.
Regular assessment of pain and other symptoms was rated as a valid quality criterion, though it was commented that a validated instrument might not always be available, particularly for specific patient groups (e.g. for persons with advanced dementia).
