Does hearing aid benefit increase over time?

In a recent tutorial for the journal, Palmer et al. [J. Acoust. Soc. Am. 103, 1705-1721 (1998)] reviewed the literature on the potential for increases in hearing aid benefit over time (acclimatization). Their review might leave some readers with the impression that acclimatization has implications for the fitting and selection of hearing aids today. We (Turner and Bentler), along with two other researchers in the field (Humes and Cox), conducted a similar review of the literature a few years earlier [Turner et al., Ear and Hearing 17, 14S-28S (1996)] and found little evidence of a robust effect. The bulk of the existing evidence, including the most recent studies on this topic, support earlier conclusions, i.e., that there is no evidence for the existence of a strong acclimatization effect in current hearing aid use.