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One significant concern that pilots have about cockpit auditory warnings is that the signals presently used lack a sense of priority. The relationship between auditory warning sound parameters and perceived urgency is, therefore, an important topic of enquiry in aviation psychology. The present investigation examined the relationship among subjective assessments of urgency, reaction time, and brainwave activity with three auditory warning signals. Subjects performed a tracking task involving automated and manual conditions, and were presented with auditory warnings having various levels of perceived and situational urgency. Subjective assessments revealed that subjects were able to rank warnings on an urgency scale, but rankings were altered after warnings were mapped to a situational urgency scale. Reaction times differed between automated and manual tracking task conditions, and physiological data showed attentional differences in response to perceived and situational warning urgency levels. This study shows that the use of physiological measures sensitive to attention and arousal, in conjunction with behavioural and subjective measures, may lead to the design of auditory warnings that produce a sense of urgency in an operator that matches the urgency of the situation.

"The human knowledge base is eroding as we lose languages, exacerbated by the fact that most of them have never been written down or recorded... Each language is a unique expression of human creativity... it seems premature to begin constructing grand theories of universal grammar...If we can learn to value the intellectual diversity that is fostered by linguistic variety, we can all help to ensure its survival."

This article discusses how we might alter the language we use to discuss climate change in order to instill urgency and encourage meaningful action. It describes Matthew Schneider-Mayerson and Brent Ryan Bellamy's publication "An Ecotopian Lexicon," a book of words to better convey the crisis of climate change. In the spirits of science fiction writers who often create new vocabulary for their imagined worlds, the two professors assembled a committee of writers, scholars, and artists to compile loan words that would more adequately communicate the reality of the climate crisis. These words were taken from languages such as Thai, Gaeilge, Norwegian, and Luganda. They hope that intentionally influencing the language we treat climate change with will help influence the action and imagination we apply to it. As written, "our inability to imagine another path forward reflects a limited vocabulary. "