Gifted Issues Discussion homepage Forums Identification, Testing & Assessment Younger sibling's results

Yes, and with regression to the mean you would have to expect the deltas for siblings to get even bigger the further one of them is from the mean.

Since you mentioned being a dual language family, are there ways the verbal environment is different for your second child, ie did the language family members use shift away from the testing language? Which language are the kids using among themselves during play? Which language with the nanny? was the older kids formal schooling in the testing language? All of these can make a difference.