Effect of a looming visual cue on situation awareness and perceived urgency in response to a takeover request.

Results showed a marginally significant difference overall among the three participant groups receiving the different cues associated with the TORs, F (2, 87) = 3.02, p = .05, in the NotMatched category: control ( M = 3.00, SD = 2.08), dimming ( M = 1.67, SD = 2.04), and looming ( M = 2.33, SD = 2.17).

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There was no significant difference between any of the groups overall, although the difference between the dimming and looming groups approached significance, F (1, 57) = 3.72, ( p = .06). 3.3 Discussion In Experiment 2, we examined the effects of visual cues and location matching on situation awareness and perceived urgency.

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