Table 2 Confusion matrices of the Group A character sets (first stage) Stimulus.

From: Legibility Assessment of Visual Word Form Symbols for Visual Tests

  

Stimulus

Incorrect response (%)

 

60.0

30.0

8.3

6.7

6.7

13.3

56.7

28.3

18.3

16.7

 

0.0

6.7

3.3

3.3

16.7

3.3

0.0

6.7

36.7

15.0

 

8.3

6.7

5.0

13.3

21.7

35.0

36.7

3.3

3.3

1.7

 

26.7

13.3

8.3

0.0

13.3

5.0

1.7

5.0

0.0

40.0

 

41.7

5.0

0.0

5.0

8.3

1.7

1.7

3.3

10.0

43.3

 

15.0

1.7

5.0

6.7

3.3

3.3

1.7

5.0

1.7

1.7

 

6.7

0.0

5.0

20.0

3.3

3.3

10.0

5.0

21.7

16.7

 

10.0

5.0

11.7

1.7

20.0

8.3

1.7

3.3

5.0

5.0

 

8.3

5.0

6.7

40.0

3.3

5.0

3.3

6.7

5.0

3.3

 
  1. Note: Percentages over 15% were underlined, and were defined as good pairs of confusion, indicating that the paired characters had higher percentages of confusion with each other near the identification contrast threshold. When a character formed a good confusion pair with more characters, it had a greater chance of being included in experiment 2. X-axis, stimuli; Y-axis, incorrect responses in percentage frequency (%).