Once the child has completed sorting by one criterion, do NOT move the piles back together and say:
03-B. Ok now look at the cards again and try to find another/different way to group these cards.
1 stands for "correct response" and signifies that the child demonstrated the skill being assessed.
0 stands for "incorect response". That is 0 means the child does not have or did not demonstrate the skill being assessed.
999 stands for "refused to respond". Refused answer is only to be used when a child literally refused to respond to a question.
When to probe: If the child has not used all the cards to form the two groups, then you can prompt them once by asking them to use ALL of the cards AND if the child has placed the cards in a row or column and the groups are not visible, you can prompt the child once by reminding him/her that the task is to sort in two separate groups and you can also use the white sheets of paper.