A method of monitoring a trainee to determine when the trainee subconsciously identifies an object previously associated with a desired trainee response includes attaching at least one biological response sensor to the trainee and receiving biological response data of the trainee from the at least one biological response sensor. The method further includes comparing the biological response data of the trainee to biological responses linked to different ones of a plurality of trainee responses using a processor in communication with the at least one biological response sensor, the plurality of trainee responses including the desired trainee response, and detecting trainee recognition of the object previously associated with the desired trainee response based, in part, on the biological response data being linked to the desired trainee response included with the plurality of trainee responses. The desired trainee response is below the conscious awareness of the trainee.