Sterchi, Yanik
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Yanik
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Sterchi, Yanik
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- PublikationWhy stop after 20 minutes? Breaks and target prevalence in a 60-minute X-ray baggage screening task(Elsevier, 03/2020) Buser, Daniela; Sterchi, Yanik; Schwaninger, Adrian [in: International Journal of Industrial Ergonomics]Current EU regulation restricts continuously reviewing X-ray images of passenger baggage to 20-min duration as a precautionary measure to prevent performance decrements in airport security officers (screeners). However, this 20-min limit is not based on clear empirical evidence on how well screeners can sustain their performance over time. Our study tested screeners in a 60-min simulated X-ray cabin baggage screening task. One group took 10-min breaks after 20 min of screening; the other group worked without breaks. We found no decrease in performance over 60 min in either group. Breaks did not affect performance, but they did reduce the amount of subjective distress. By varying target prevalence, we found that da with a slope of about 0.6 is a more valid measure of detection performance than d’. Target prevalence caused a criterion shift. Our results provide a basis for conducting field studies of prolonged screening durations, and open the discussion on whether more flexible break policies and work schedules should be considered.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationRelevanz von Wissen über Alltagsgegenstände und visueller Inspektionsstrategie für die Gepäckkontrolle mit Röntgengeräten(GfA Press, 02/2017) Hättenschwiler, Nicole; Sterchi, Yanik; Michel, Stefan; Schwaninger, Adrian; Jäger, Matthias [in: 63. Frühjahrskongress der Gesellschaft für Arbeitswissenschaft (GfA)]04B - Beitrag Konferenzschrift
- PublikationEine erste Simulation zur Optimierung des Durchsatzes beim Einsatz automatischer Sprengstoffdetektion für die Handgepäckkontrolle an Flughäfen(GfA Press, 03/2016) Sterchi, Yanik; Schwaninger, Adrian; Jäger, Matthias [in: 62. Frühjahrskongress der Gesellschaft für Arbeitswissenschaft (GfA)]04B - Beitrag Konferenzschrift
- PublikationA first simulation on optimizing EDS for cabin baggage screening regarding throughput(IEEE, 25.01.2016) Sterchi, Yanik; Schwaninger, Adrian [in: 2015 International Carnahan Conference on Security Technology (ICCST)]04B - Beitrag Konferenzschrift
- PublikationOn screen alarm resolution with explosive detection systems for cabin baggage screening(15.10.2018) Schwaninger, Adrian; Hättenschwiler, Nicole; Sterchi, Yanik; Mendes, Marcia; Hügli, David; Merks, Sarah06 - Präsentation
- PublikationDetection measures for visual inspection of X-ray images of passenger baggage(Springer, 2019) Sterchi, Yanik; Hättenschwiler, Nicole; Schwaninger, Adrian [in: Attention, Perception, & Psychophysics]In visual inspection tasks, such as airport security and medical screening, researchers often use the detection measures d' or A' to analyze detection performance independent of response ten-dency. However, recent studies that manipulated the frequency of targets (target prevalence) indicate that da with a slope parameter of 0.6 is more valid for such tasks than d' or A'. We in-vestigated the validity of detection measures (d', A', and da) using two experiments. In the first experiment, 31 security officers completed a simulated X-ray baggage inspection task while re-sponse tendency was manipulated directly through instruction. The participants knew half of the prohibited items used in the study from training, whereas the other half were novel, thereby es-tablishing two levels of task difficulty. The results demonstrated that for both levels, d' and A' de-creased when the criterion became more liberal, whereas da with a slope parameter of 0.6 re-mained constant. Eye-tracking data indicated that manipulating response tendency affected the decision component of the inspection task rather than search errors. In the second experiment, 124 security officers completed another simulated X-ray baggage inspection task. Receiver op-erating characteristic (ROC) curves based on confidence ratings provided further support for da, and the estimated slope parameter was 0.5. Consistent with previous findings, our results imply that d' and A' are not valid measures of detection performance in X-ray image inspection. We recommend always calculating da with a slope parameter of 0.5 in addition to d' to avoid poten-tially wrong conclusions if ROC curves are not available.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationField study: Time on task for X-ray screening of cabin baggage(10/2021) Buser, Daniela; Schwaninger, Adrian; Sterchi, Yanik06 - Präsentation
- PublikationTime on task and task load in visual inspection: A four-month field study with X-ray baggage screeners(Elsevier, 17.05.2023) Buser, Daniela; Schwaninger, Adrian; Sauer, Jürgen; Sterchi, Yanik [in: Applied Ergonomics]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationEinfluss von Arbeitsdauer und Pausen auf die Leistung von Sicherheitsbeauftragten während 60 Minuten Röntgenbildanalyse von Handgepäck(03.03.2020) Buser, Daniela; Sterchi, Yanik; Schwaninger, Adrian06 - Präsentation
