Karl Pearson 
251 
5166, 
We have, using Sheppard's Tables : 
.-■la^ = - -4980, 
and for the arrays in order from red to jet black : 
= - "S^SS, x.,la^^ = - -5077, .r-,ja^..^ 
^^J<^., = - -4837, = - -1359. 
There is thus an almost continuous decrease in conscientiousness as we pass from 
red to jet black hair*. Or, there is a very slight but sensible relationship of hair 
pigmentation and conscientiousness. Using formula (iii) we find 
1 
Hence 
and 
•2515 - -2480 
1-2515 
•2515. 
•00276, 
V = -058. 
The assumption that conscientiousness is a continuous variate approximately 
following the normal distribution appears a reasonable one. 
(B) Self-consciousness and Hair Colour. The data for 1914 schoolboys are 
given in the following table : 
Hair Colour. 
Red 
Fair 
Brown 
Dark 
.Jet 
Black 
Totals 
Selfconscious 
Unselfconscious . . . 
42-5 
36-5 
344-25 
322-75 
296-5 
351-5 
238 
251-5 
14-25 
16-25 
935-5 
978-5 
Totals 
79 
667 
648 
489 -5t 
30 -5t 
1914 
Here xja-^ = + '02816, and for the arrays : 
,:r-,/o-, = - -0953, x,/a., = - •0404, x.Jo-., : 
xja, = + •0346, x,la, = + •0823. 
1 
•1066, 
These give 
whence we find 
•0052, 
•066. 
It will be seen that hair colour is more closely related to self-consciousness 
than to conscientiousness, the red and fair boys being more self-conscious than the 
dark haired boys — an experience which may I think be confirmed on adults. The 
477, J2K= "-5070, .7;i/(r^= --5159, 
* The values of .r reduced to a common unit a^. are : .Ti/o-^ 
Xil<T^= - -4830, JoK= - -1357. 
t One boy was placed intermediate in hair colour between dark brown and jet black 
