The difference between percent correct and information transferred: a lesson learned from Miller and Nicely 1955

Consider that two stimuli, with each being presented 100 times, produce the following 3 response patterns (rows represent stimuli and column represent responses):

  1. 100, o
    0,    100
  2. 50, 50
    50, 50
  3. 0,   100
    100, 0

The present correct score is 100%, 50% and 0% for response pattern 1, 2 and 3, respectively, but the corresponding information transferred is 100%, 0% and 100% for response pattern 1, 2 and 3, respectively.

what does response pattern 3 mean?