A method of conditioning a trainee to identify an object and monitoring the trainee to determine when the trainee subconsciously identifies the object is provided. The method includes using a processor to select a visceral response-evoking image for evoking the desired trainee response corresponding with the object, attaching a sensor to the trainee for detecting trainee biological responses, and providing instructions to display a stimulus image depicting the object for a first duration that is below conscious awareness of the trainee. The method includes providing instructions to display the visceral response-evoking image after the display of the stimulus image and for a duration below conscious awareness of the trainee to link the desired trainee response to the object in a mind of the trainee, and detecting trainee recognition of one of the one or more objects based on the biological response data linked to the desired trainee response.