Effects beyond the audiogram
For most common configurations of audiogram, modern high-end hearing aids do a reasonable job of providing appropriate basic audibility under most conditions. However, it turns out that factors beyond the audiogram (e.g. cognition, auditory lifestyle, and supra-threshold psychoacoustics) influence the optimal form of amplification for the individual listener. Future developments in hearing-aid features and fitting should address candidature issues, in order for each patient to experience the largest possible benefit.