Accession Number:

AD0605666

Title:

A STUDY OF THREE METHODS OF DECODING,

Descriptive Note:

Corporate Author:

VERMONT UNIV BURLINGTON

Report Date:

1964-04-01

Pagination or Media Count:

8.0

Abstract:

One experiment was conducted to compare three different methods of decoding binary digits. The message consisted of the eight letters A - H encoded in a Huffmantype instantaneous compact code the redundancy of the message was approximately 8. The binary digits were either presented sequentially self-paced and decoded with telegraph keys or the method of whole presentation was employed with either verbal or written readout. Decoding with the keys was both slower and less accurate than the other two methods verbal decoding was faster through no less accurate than written decoding. It was suggested that decoding time can be subdivided into three components processing time, reaction time, and recovery time. None of these three components seemed to vary consistently with the length of the code word or the uncertainty of the symbol transmitted instead, the relevant factors seemed to be stage of practice and distinctiveness of the stimuli or responses. Finally, it appears that college students can achieve a rather high rate of decoding in a short period of time with a small message ensemble, whole presentation, and verbal report. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE