闫欢

Yan Huan: public information is limited. What can currently be confirmed is that three of the author's works are held in the collection, mainly in the fields of applied psychology and language and writing. Representative works include The Marshmallow Test: The Bible of Self-Control Development, Media Education Theory: Origins, Theory and Application, and Television and Minors' Psychology. These titles suggest an interest in self-control development, media literacy education, and the influence of television on the psychology of minors. The writing sits between academic research and popular presentation, combining theoretical overview with practical application for general readers. The Marshmallow Test discusses the formation and cultivation of self-control around a classic psychological experiment; Media Education Theory traces the development of media education through its origins and theories; and Television and Minors' Psychology focuses on the relationship between the media environment and adolescent psychology. Because biographical details are scarce, the author's nationality, dates of birth and death, and educational background are unknown; the above introduction is based only on information about the works in the collection.