You are asked below to rate some aspects of the child's ability and attainment. Each area is subdivided into five categories. It is expected that in a truly representative cross-section of children of this age, approximately five per cent. fall into the first category, the next 25 per cent. would fit the second description, the middle or average group of 40 per cent. would be in the third category, the next 25 per cent. in the fourth category and the final five per cent. in the fifth category.