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Papers (10)Insight
Journal ArticleDOI
Douglas Vickers, J. N. Leary 
01 Jun 1983-Human Factors
27 Citations
Contrary to what might be expected with the "ideal observer" hypothesis of signal detection theory, changes in the proportions of hits and false alarms, as well as in their associated response times and confidence ratings, indicated that observers reacted to the decrease in signal probability by adopting a less stringent criterion for making signal responses.
Being able to see someone reading the message appears to convey a special communication advantage on the presentation.
This research shows that the presence of a signal word and adding specific source information (telling who is giving the message) was found to increase credibility judgments and compliance intentions.
Message involvement is a full mediator between evoked fear, perceived threat and efficacy perception on the one hand, and attitudes towards the message and behavioral intention to accept the message on the other.
These two message-related factors had independent and interactive effects on how long grazers stayed tuned to a channel.
However, the results suggest that flashing an entire one-phase message may have adverse effects on message understanding for drivers who are unfamiliar with this dynamic mode of display.
Finally, the results suggest that text messaging symbols are often used to signal descriptions of things that are important to the message sender.
The relative perceptual effort required to recognize a particular message is a communicative signal that serves as a clue about whether that message is the one intended by the graph designer.
The message probably can be a distinct qualitative signal or a quantitative one resulting in a gradient among cells.
To the extent that we can better understand how the content and structure of messages interact with a viewer's information-processing system to determine which parts and how much of a communication message is remembered, we will make great strides in understanding how people communicate.