The preceding 10 chapters in this book have discussed how aspects of different forms of auditory stimulation-speech, music, noise, nonverbal sounds, and so onin¡uence cognition and performance in a wide variety of tasks. A common theme that ran through many of the chapters is that while our phenomenal experience views auditory processing as seemingly effortless, in fact many aspects of auditory cognition pose signi‘cant demands on attentional resources and thus on mental workload, particularly in challenging listening environments. Accordingly, the design of auditory displays that minimize workload demands so that people can use them effectively and safely represents an important practical issue. This chapter examines the implications of the ‘ndings on auditory cognition discussed previously for the design of auditory displays.