Quote from pknurse
There is actually extensive researcher into the topic especially as to what schools should do if a student fails found here: http://scholarworks.sjsu.edu/cgi/viewcontent.cgi?article=4242&context=etd_theses
There are many more if you look on (go to Google Scholar, search "students fail nclex"). The reasons run the gauntlet. "Test anxiety" is actually not listed - rather poor critical thinking skills and low GPAS (cumulative and nursing theory). And even then some of these studies, using this data/algorithm, are unable to predict whether or not a person will pass or fail.
So the right answer to your question is: No one really knows. The answers you will see in this forum are anecdotal.
A few points to your post:
The EBP you posted is 23 years old.
Unless the sample size included subjects with document anxiety, learning disabilities, etc, one cannot say whether or not test anxiety does (or doesn't ) have an effect on passing the NCLEX.
I have documented test anxiety, yet I passed the NCLEX the first time in 2005 and 2012 ( PN and RN, respectively) that is not to say the next individual will do the same. Obviously, a high percentage do well, regardless.
I graduated from a program where they were including in their research about test anxiety and "novice to expert" in terms of a nursing student because they had a day (higher percent of traditional students) and evening (higher percent of "non-traditional" students) classes, and are measuring a correlation between the information. My professor is (because they are still researching, forgot that year they were going to stop at; I think my class was year 2 or 3 in a five-year study) a principal researcher; while two other professors I had talked about the pattern of what individuals use when test anxiety is suspected. One professor was able to identify my test anxiety; I never told anyone that I had it; I didn't mention it.
Unless we are doing a quanta rice study, of course out posts are purely opinion, however, that doesn't diminish that a person's anxiety or pathology will not be dismissed. There are people who pass with 4.0's fail the NCLEX. My opinion is that it is the APPLICATION in answering the questions that trip people up more than anything.