DDG 51 operational evaluation : measures of workload from Combat Information Center communication patterns.

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by  Conlon, Thomas M.;Petho, Frank C.

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DDG 51 Operational Evaluation: Measures ofWorkload from Combat Information Center Communication Patterns
12 PERSONALAUTHOR(S)
CONLON, Thomas Mark
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Master's thesis FROM TO 1992, SEPTEMBER 67
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FIELD GROUP SUB-GROUP DDG-51, Arleigh Burke, Stress, Communication, Workload, OPEVAL
19.ABSTRACT(Continueon reverseifnecessaryand identifybyblocknumber)
This thesis analyzes 2,700 verbal transmissions collected from an audio tap on DDG 51's internal communication
networkduringtheship'sOPEVAL.Thefrequencyanddurationofthesevoicetransmissionsareanalyzedto explore
for systematic changes. These changes are induced by eight simulated combat scenarios. The data shows that
CIC team member communication patterns varied as a function of workload. The use of verbal communication
patterns as unobtrusive, noninvasive measures ofworkload in operational settings is discussed and recommenda-
tions are madetofurtherdevelopthese measures.
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Frank Petho [phone] OR/Pe
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DDG OPERATIONAL EVALUATION: MEASURES OF WORKLOAD FROM COMBAT
51
INFORMATION CENTER COMMUNICATION PATTERNS
by
Thomas M. Conlon
Lieutenant, United States Navy
B.S., United States Naval Academy, 1986
Submitted in partial fulfillment
ofthe requirements for the degree of
MASTER OF SCIENCE IN OPERATIONS RESEARCH
from the
NAVAL POSTGRADUATE SCHOOL
September 1992
ABSTRACT
This thesis analyzes 2,700 verbal transmissions collected from an audio tap on
DDG 51's CIC internal communication network during the ship's OPEVAL. The
frequency and duration of these voice transmissions are analyzed to explore for
systematic changes. These changes are associated with different workload levels and the
levels of stress induced by eight simulated combat scenarios. The data shows that CIC
team member communication patterns varied as a function of workload. The use of
verbal communication patterns as unobtrusive, noninvasive measures of workload in
operational settings is discussed and recommendations are made to further develop these
measures.
in
.
TABLE OF CONTENTS
INTRODUCTION
I. 1
A. INCREASING SYSTEM COMPLEXITY 2
B. AEGIS: AN EXAMPLE OF INCREASED COMPLEXITY 3
The AEGIS System 4
1
2. The VINCENNES Incident 5
C. WORKLOAD AND STRESS 6
1. Stress 6
2. Causes of High Arousal Stress 10
3. Effects of High Arousal Stress 11
a. Attentional Narrowing 11
b. Short Term Memory Loss 12
c. Activation 13
d. Communication Degradation 13
4. Measurement of Stress: Issues 14
a. Acceptability to the Chain of Command 14
b. Generalizability of Findings 15
c. Obtrusiveness of Data Collection 15
D. OPERATIONAL TEST AND EVALUATION OF DDG 51 16
IV