Directional responses by kittens to an auditory stimulus.

Six kittens were tested in a 2-choice maze to determine if they would execute directional approach responses to an auditory stimulus. Tests were done at various postnatal ages (4-10, 11-17, 18-24, and 25-31 days) and comparison was made with responses of 5 kittens tested without auditory stimulation. At the earliest ages no evidence was seen for auditory approach responses but by 18-24 days consistent approch responses were found.