Features of the Questionnaire
Items in the 75-100 developmental quotient range.
A 2 standard deviations below the mean cut-off score is used for questionnaires at 4,8,12,16,20,24,30,36,48,60 months.
A 75 developmental quotient is the cut-off for questionnaires at 6,10,14,18,22,27,33,42,54 months.