64 A BIOMETR1C STUDY OF BASAL METABOLISM IM MAM. 



constants obtained by Whiting 73 for age and weight in 500 criminals 

 examined by Goring. The correlations deduced are: 



For age and weight ............................ fw= +0-136 0j030 



For age and weight witn siatare constant ........ i r m , u: = -f 0.151 =*=0-030 



These constants indicate a slight increase in weight with increasing 

 age. 



Our own materials show the correlations given in table 13. Since 

 the problem of any actual gain in weight after the completion of growth 

 involves a consideration of the stature of the individuals, the correla- 

 tions for age and weight have been corrected for the influence of 

 stature by the use of the formula 



_ _ 



f tan 



Among the men only the correlation for the 62 "other men" of the 

 original series can be looked upon as statistically significant. 



The partial correlations between age and weight for constant stat- 

 ure are positive in all the larger series of men, excepting only the 

 Gephart and Du Bois selection/ 4 and indicate a slight tendency for 

 increase in body-weight with age in men. 



The women of the first series show practically no correlation be- 

 tween age and body-weight. Correction for the possible influence of 

 stature does not materially alter the relationship. The supplementary 

 series, however, shows material and statistically significant positive 

 correlation., indicating decided increase of weight with age. The corre- 

 lation is not so large, but nevertheless apparently statistically signifi- 

 cant, for the total available women. The values of the gross correla- 

 tions are but slightly reduced when correction is made for the influence 

 of stature by the use of the partial correlation formula. The constants 

 for the second series of women and for the entire series of women seem 

 to suggest that women have a greater tendency than men to increase 

 in weight with age. The apparent contradiction between the results 

 of the first and of the supplementary series is perhaps due to differences 

 in age. The individuals of the second series are on the average about 

 13 years older than those of the first. Thus the average age in the first 

 series is 26.7 years, whereas that of the second series is 39.9 years, and 

 that of all the women is 31.1 years. The first series shows a standard 

 deviation of only 9.9 years around the average age of 26.7 years, 

 whereas the second series shows a standard deviation of 16.0 years 

 around the average age of 39.9 years, and the whole series shows a 

 variation of 13.8 years around the average of 31.1 years. 



** Wiiitimft, Bionneltrika. 1915. 11. p. 8. 



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