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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Psychon Bull Rev. 2019 Jun;26(3):974–984. doi: 10.3758/s13423-018-1550-6

Table 1.

Roman letters and their ranking by letter complexity (1 = most complexity) and distinctiveness (1 = most distinct).

Letter complexity distinctiveness
w 5 1
x 13 2
E 2 3
t 5 4
B 1 5
A 5 6
Q 5 7
j 19 8
s 16 9
T 13 10
R 2 11
D 19 12
i 19 13
c 16 14
G 13 15
a 2 16
g 5 17
o 19 18
b 10 19
J 23 20
d 10 21
r 16 22
q 10 23