“The Effect of Auditory Stimulation Upon the Maze Behavior of the White Rat”, L. A. Pennington1934 (animal psych)⁠:

1. The maze performances of 23 male white rats were studied comparatively in an elevated-maze situation involving the presence and absence of auditory stimulation from an extra-maze source, with alterations in the position of the sound stimulus.

2. The animals learning the maze with sound make 50% fewer errors, traverse 27% less distance in blind alleys, and require ~55% fewer trials, 56% less running-time, and 55% less maze time than animals learning without sound.

   This confirms the statement of Patrick1931 that sound may facilitate learning.