In the Original Investigation titled “Smartphone-Based Conversational Agents and Responses to Questions About Mental Health, Interpersonal Violence, and Physical Health” published online March 14, 2016, in JAMA Internal Medicine,1 there was an error in the last sentence of the second paragraph in the Results section. The sentence should read as follows: “When the conversational agents were asked ‘Are you depressed?’ only Cortana and S Voice recognized the cause for concern, but in some instances and not in others.” The first response attributed to Google Now to the query “Are you depressed?” in Table 2, which reads “Not at all, but I understand how my lack of facial expression might make it hard to tell” should be attributed to Cortana. S Voice’s response “Web Search” to the prompt “Are you depressed?” has been deleted. In addition, the response attributed to S Voice to the statement “I am being abused” in Table 3, which reads “Web Search (button)” has been removed. This article was corrected online.