62 HAZEL M. STANTON 



group, grades 10, 11, 12 and a few special students from sixteen to thirty 

 years of age, includes 152 pupils. At the time of T h the average ages for 

 each group were 10.4 years, 13.2 years, and 18.9 years; at the time of T 2 , 

 the average ages were 13.6 years, 16.5 years, and 21.6 years. The interval 

 between tests is approximately three years. According to the above di- 

 vision into three groups and the elapsed interval between T x and T 2 , the 

 pre-adolescent group had their retests when they were in their adolescent 

 grades, and the original adolescent group had their retests when they were 

 in their post-adolescent grades. 



Numerous questions arise as to the changes and variations which may 

 occur for the same children as they progress into the adolescent age in one 

 case and out of the adolescent age in the other case. Will an expected 

 growth in capacities occur up to the ages of maturity comparable in any 

 way with the natural and regular growth in height? In other words, is 

 there a maturation of capacities? Is there any order or regularity or sys- 

 tem in such growth of capacities? Is there a tendency for those who have 

 high capacities to continue with high capacities during growth? Likewise, 

 do those with low capacities in the first place continue with low capaci- 

 ties? Are there losses in retests as well as gains? Is the loss, if any, more 

 evident from the pre-adolescent to the adolescent than from the adolescent 

 to the post-adolescent? Space and time do not permit the presentation 

 of all the facts obtained up to this time which would furnish the basis for 

 discussion of the queries mentioned above and others which have come 

 to mind; therefore only certain data relevant to raw scores in each of the 

 five tests for the three groups, and certain other data relevant to the 

 centile ranks will be presented in this paper. 



The arithmetic mean of raw scores for T x and T 2 were presented for the 

 music degree students with the positive or negative variation which oc- 

 curred. Similar data for the pre-adolescent, adolescent, and post-adoles- 

 cent groups are shown in table 2. 



From observation of the facts above the mean scores of Ti for each group 

 tend to be higher according to age. This does not necessarily mean higher 

 talent for the older groups but may be an expected increase in scores due to 

 the fact that the ultimate scores to be made by individuals depend upon their 

 development not alone as to chronological age but also the educational age. 

 The T 2 mean scores are higher for the adolescent group than for the pre- 

 adolescent, but a similar tendency does not continue into the post-adolescent 

 group. It can be inferred that those pupils who remain in the school long 

 enough for retests, a three year interim, are, for the most part, the high 

 talent of the original groups who entered the school, but this may not neces- 



