Interviewer instructions
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 does not begin counting objects once you have asked the question, then you can repeat once more AND if it is unclear if the child has completed counting, you can ask "have you finished?"