In the highly anticipated Inside Out sequel, Lisa Damour, a psychologist and expert on teenage emotions, worked closely with the creative team to ensure the portrayal of adolescent emotions was accurate. Alongside emotion scientist Dacher Keltner, the team added new characters like anxiety, envy, embarrassment, and ennui to showcase the complexity of teenage emotions in the film. The film's focus on the transition to adolescence highlights how self-conscious emotions like embarrassment and envy develop as teenagers gain the ability to imagine different scenarios and see themselves from an outside perspective. Damour and Keltner's guidance ensured the characters and emotions depicted were true to the science of emotions, emphasizing the importance and healthy nature of experiencing a range of emotions, including discomforting ones like anxiety. Through their work on the film, Damour and Keltner aim to promote a better understanding and acceptance of the full spectrum of emotions in teenagers.