Health literacy is crucial to supporting good health and is a major national goal. Audio delivery of information is becoming more popular for informing oneself. In this study, we evaluate the effect of audio enhancements in the form of information emphasis and pauses with health texts of varying difficulty and we measure health information comprehension and retention. We produced audio snippets from difficult and easy text and conducted the study on Amazon Mechanical Turk (AMT). Our findings suggest that emphasis matters for both information comprehension and retention. When there is no added pause, emphasizing significant information can lower the perceived difficulty for difficult and easy texts. Comprehension is higher (54%) with correctly placed emphasis for the difficult texts compared to not adding emphasis (50%). Adding a pause lowers perceived difficulty and can improve retention but adversely affects information comprehension.

翻译：健康素养对于维护良好健康至关重要，也是国家层面的重要目标。音频信息传递正逐渐成为获取知识的流行方式。本研究评估了音频增强技术（包括信息强调和停顿）对不同难度健康文本的影响，并测量了健康信息的理解程度与记忆保留率。我们针对难易文本制作了音频片段，并借助Amazon Mechanical Turk平台开展实验。研究结果表明，强调对信息理解和记忆保留均具有显著影响。在未插入停顿的情况下，对重要信息进行强调可降低难易文本的感知难度。对于困难文本，正确设置强调时的理解正确率（54%）高于未添加强调的情况（50%）。添加停顿可降低感知难度并提升记忆保留率，但会对信息理解产生负面影响。