Defining selective listening as an intelligence gathering technique that depends on an individual's ability to access, monitor, and report oral messages accurately and to give processing priority to messages of possible intelligence value, this report describes one important application of the technique: overhearing the conversations of others ("target conversations"). It considers several problems involved in this activity, including moving within earshot of these conversations, picking up and storing their information, and recounting their contents. It then presents procedures for overcoming these problems along with supporting experimental evidence. (FL)