Hidden Brain is hosted by science journalist Shankar Vedantam, who narrates each episode's setup and then interviews an academic researcher about the psychology behind an ordinary problem or decision. The format is long-form and conversational, typically built around a single study, theory, or named concept that the host and guest unpack over the course of the episode. Recurring series such as 'Love 2.0' (covering relationship conflict, acceptance, and breakups) and 'You 2.0' (covering habits, motivation, and personal change) organize related episodes into short thematic arcs. Guests are usually psychologists, cognitive scientists, and behavioral researchers affiliated with universities including Clark University, the University of Windsor, Babson College, Northwestern, and the University of Colorado Boulder. Topics that recur across episodes include couples' communication and conflict patterns, grief and moving on after breakups, career meaning and burnout, financial behavior and consumer debt, and creative or motivational ruts. Episodes often illustrate research findings with pop-culture references, such as clips or examples from Marriage Story, Crazy Stupid Love, and The Descendants, or public figures like Steve Jobs. The tone is explanatory and even-paced, oriented toward helping listeners apply behavioral-science findings to their own relationships, work, and money decisions rather than covering news or current events. Episodes tend to run 50 to 100 minutes, longer than a typical single-topic interview show, allowing for extended discussion of one study or concept per episode. The core audience is listeners interested in applied psychology and self-understanding rather than entertainment or political commentary. Production centers on Vedantam's interview audio and narrated bridges, occasionally supplemented with film or archival clips used as illustrative examples.