1981 Volume 23 Issue 4 Pages 219-223
The present experiment was designed to examine the effects of instruction specifying the receivers, arrangement of stimulus figures, and the number of critical features on redundancy of a message. The experiment was carried out in the situation in which receivers of messages were not present in front of the senders. The results revealed that messages were less redundant when the characteristics of the receivers were known to the senders, and that the senders referred to more features as critical features increased. These were interpreted that redundancy of a message tended to be adjusted according to the situation in which the message was produced.