Cognitive Psychology Commons^™

Getting Active With Passive Crossings: Investigating The Efficacy Of In-Vehicle Auditory Alerts For Rail Road Crossings, Steven Landry

Dissertations, Master's Theses and Master's Reports

Train-vehicle collisions at highway-rail grade crossings continue to be a major issue in the US and across the world. Installing additional hardware at individual crossings is expensive, time consuming, and potentially ineffective. To prevent recent trends in safety improvement from plateauing, experts are turning towards novel warning devices that can be applied to all crossings with minimal cost. In-vehicle auditory alerts (IVAAs) could potentially remedy many of the human factor issues related to crossing safety in a cost effective manner.

This thesis presents a series of experiments designing and testing an IVAA system for grade level railroad (RR) crossings. Study …

Designing Better Symbols: An Attentional Approach To Match Symbols To Performance Goals, Hannah North

Dissertations, Master's Theses and Master's Reports

Effective displays require symbol sets that are customized to specific tasks and performance goals. In order to create such sets, designers must account for the effects of top-down and bottom-up attention. The current work presents a pair of experiments that examined the effects of salience and cueing in a change detection tasks within the flicker paradigm (Rensink, O’Regan and Clark, 1997). Each trial, participants either received no cue or a cue indicating which symbol would be the target. This cueing manipulation isolated top-down effects to the cued condition. Consistent with previous studies (Orchard, 2012; Steelman, Orchard, Fletcher, Cockshell, Williamson & …