Choice Response in Quiet and Loaded Channels with Verbal and Non-verbal Auditory Stimuli

Observations were made on certain verbal and non-verbal signals in quiet, noisy and in simulated RT conditions where it was required to select and to respond to up to twelve sound signals. Verbal signals appeared to be significantly better than non-verbal even where channel noise was higher than signal level. Ambient noise was not detectable as an effect because of the confounding nature of the learning curve.