My son was tested on WPPSI-IV at age 3 and then again one year later at age 4. I am shocked at how he flip-flopped in areas. Curious to hear your thoughts.

VCI - 74 (@3 yrs); 129 (@4 yrs)
VSI - 129 (@3 yrs); 106 (@ 4yrs)
WMI - 140 (@ 3 yrs); 103 (@ 4yrs)

Thanks!