Aptitude testing for selection, specialization, and training, of airport security X-ray imaging operators (X-APT)

Abstract

X-ray image analysis and interpretation of carry-on items at airports is a primary responsibility for security personnel. This task is one of the most difficult and critical in ensuring the safety of commercial air travel for the public. There are several factors that contribute to the difficulty. X-ray imaging aptitude testing (X-APT) is focused on the individual aptitudes that are influential in acquiring, performing and retaining the perceptual and cognitive skills that are associated with the airport check-point X-ray threat detection. X-APT is a computer based battery of assessment tests derived from validated psychometric assessment tools. The battery is presented on a self-contained portable Tablet, with interactive graphics to increase user engagement. A pilot study of the X-APT prototype was conducted with current Transportation Security Administration X-ray imaging operators to refine and validate the system design. A full scale field evaluation is being conducted at several major airports. The evaluation compares X-APT performance aptitude based predictions with archived image analysis performance results. X-APT provides a valid tool for selection and classification of security personnel, and has the potential to enable self-paced training and skills improvement.