This experimental study examined whether a humanitarian and a dominant interviewing style, respectively, had any causal effect on 146 interviewees’ memory performance, as well as the interviewees’ psychological well-being. Independent-samples t-tests showed that participants interviewed in a humanitarian style reported a larger amount of information altogether, including, as defined, more peripheral and central information, compared to those interviewed in a dominant style. The amount of false reported information was statistically invariable regardless of interviewing style. A mixed between-within analysis of variance showed an interaction effect between the interviewing style and the interviewees’ anxiety level before and after interview, thus, partly supporting the hypothesis that a humanitarian interviewing style promotes greater psychological well-being among interviewees. Factors influencing the results are discussed, including the main implications, which are that a humanitarian interviewing style promotes rapport building and provides the interviewees with adequate time to find retrieval paths and cues to memories.