1980,Aircraft Alerting Systems Standardization Study, Phase I, page 9:
The results indicated significant performance degradation when a master visualattention-getter was not used. Mean detection times were substantially slower in the absence of anattention-getter in the pilot's primary field of vision.
2009, David Wyatt, Mike Tooley,Aircraft Electrical and Electronic Systems, page228:
Master caution and warning systems were developed to ease pilot workload, particularly on aircraft designed for operation without a flight engineer. In addition to theattention getter, it also directs the pilot towards the problem area concerned.
