verbal specification
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Author(s):  
Sarah Malone ◽  
Roland Brünken

Objective The aim of the current study was to compare the traditional, verbal, and motoric tasks regarding their contributions to hazard perception measurement. Background Traditional hazard perception tasks require the participants to respond to filmed traffic conflicts in an imprecise way, such as by pressing a button. More sophisticated tasks include either verbal specification or motoric localization of the perceived hazards. The present study investigated the participants’ gaze behavior when they were provided with an identical set of traffic animations but were instructed to perform one of three types of hazard perception tasks. Method In an eye tracking study, 69 drivers were shown animated traffic scenarios and instructed to perform the traditional (press button), verbal, or speeded motoric localization hazard perception task. Eye tracking revealed whether and when the participant had fixated a certain hazard cue. Results The participants in the traditional task group were slower to fixate emerging hazards, but quicker to respond to them than the participants of the verbal and the motoric groups. As a specific benefit, the verbal task differentiated between different types of failures. Conclusion Additional verbal or speeded motoric localization tasks seem to have increased the participants’ alertness when watching the animations. The verbal task provides valuable additional information regarding the participants’ performance. To approximate real-life hazard perception ability, it is recommended that researchers and practitioners use a combination of different hazard perception tasks for assessment and training.


2010 ◽  
Vol 27 (1) ◽  
pp. 9-54
Author(s):  
Deirdre Loughridge

"What can aesthetics have to say," Johann Triest complained of Haydn's Creation two years after its premiere, "to a natural history, or geogony, set to music, where objects pass before us as in a magic lantern?" By contrast, Carl Friedrich Zelter praised the oratorio as a "fine shadow-play." Both agreed, however, that the work was like an optical entertainment. Triest's and Zelter's metaphors point to a hitherto unexplored context for The Creation's early reception that contributed at once to its popularity and to its dubious status. Retrieving the exhibition practices employed by itinerant magic lanternists reveals that barrel organ music had an established place in their entertainments and that certain numbers of The Creation echoed the auditory component of magic lantern shows. For Triest, the resemblance of these numbers to a magic lantern presentation suggested that tone-paintings were meaningless without verbal specification, and that in composing the oratorio Haydn was much like an organ-grinder cranking out a predetermined tune. In Zelter's counterargument to the magic lantern, the shadow-play characterized Haydn's oratorio as a species of illusionistic display demonstrating mastery over the raw materials of music. The alternative framework Zelter developed for Haydn's oratorio placed the work alongside fireworks and other philosophical entertainments that inspired awe at human accomplishment. Together, Triest's and Zelter's metaphors suggest that optical entertainments provided terms not only for describing the oratorio and the experience of listening to it, but also for elevating Haydn to the status of master over nature——-or else lowering him to the status of machine.


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