Can the forms be used outside their designated age ranges?

Answer:  For children who are a few months younger or older than the designated age range, there is not likely to be much error in using the forms and their norms.  However, the greater the deviation in age from the norms, the less appropriate they will be.  If children are to be reassessed over periods that are mainly within the age range designated for a school-age form but that include one or two assessments that are within about 4 months below or above the designated age range, it may be better to use the school-age forms at all assessment points to maintain complete continuity of item and scale scores, rather than using instruments designated for younger and older ages.  

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