Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Effect of Providing Detection Information on Improving Signal Detection Performance: Applying Simulated Baggage Screening Program

정보 제공 피드백이 탐지 수행 증진에 미치는 효과: 가상 수화물 검사를 활용하여

  • Lim, Sung Jun (Department of Psychology, Chung-Ang University) ;
  • Choi, Jihan (Department of Psychology, Chung-Ang University) ;
  • Lee, Jidong (Department of Psychology, Chung-Ang University) ;
  • Ahn, Ji Yeon (Department of Psychology, Chung-Ang University) ;
  • Moon, Kwangsu (Department of Psychology, Chung-Ang University)
  • Received : 2018.11.05
  • Accepted : 2019.02.13
  • Published : 2019.02.28
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Abstract

The importance of aviation safety has been emphasized recently due to the development of aviation industry. Despite the efforts of each country and the improvement of screening equipment, screening tasks are still difficult and detection failures are frequent. The purpose of this study was to examine the effect of feedback on improving signal detection performance applying a Simulated Baggage Screening Program(SBSP) for improving aviation safety. SBSP consists of three parts: image combination, option setting and experiment. The experimental images were color-coded to reflect the items' transmittance of the x-rays and could be combined as researchers' need. In the option, the researcher could set up the information, incentive, and comments needed for training to be delivered on a number of tasks and times. Experiment was conducted using SBSP and participant's performance information (hit, missed, false alarms, correct rejection, reaction time, etc.) was automatically calculated and stored. A total of 50 participants participated and each participant was randomly assigned to feedback and non-feedback group. Participants performed a total of 200 tasks and 20(10%) contained target object(gun and knife). The results showed that when the feedback was provided, the hit, correct rejection ratio and d′ were increased, however, the false alarms and miss decreased. However, there was no significant difference in response criteria(${\beta}$). In addition, implications, limitations of this study and future research were discussed.

Keywords

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Fig. 1. Experimental task image combination of SBSP.

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Fig. 2. Selection of bag image in SBSP

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Fig. 3. Options of feedback, incentive, comment in SBSP.

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Fig. 4. Simulated Screening Task Image(left: gun, right: knife)

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Fig. 5. Image of providing information feedback.

Table 1. Definitions of results of screening tasks

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Table 2. Means and standard deviations of detection performance across experimental conditions

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Table 3. Results of independent t-test for detection performance

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