I am taking my DC for the WPPSI next week. She will be 5 years, 10 1/2 months at the time of testing. What kind of effect will her age have on her results. I have heard that there can be a big effect on the scores from just a few days difference on the WPPSI. is there some sort of advantage to wait another month until she is 6. I am in no rush for the test, this timing just worked out right now. Thanks in advance for your input.