I am wondering if there is a difference between the EFI (Expanded Fluid Index) and Fluid Reasoning Index score for WISC V. Is there a difference? I am hoping to apply, as my son meets the criteria if Fluid Reasoning Index is the same as EFI. I am worried that it is merely Fluid Reasoning, and not sure if he needs 145 in two areas or not. He is 11 years old. Thank you!