Audience theory has evolved over time from seeing audiences as passive receivers of media messages to more active participants. Early theories like the hypodermic needle model saw audiences as passive, but the two-step flow theory from the 1940s-1950s suggested audiences are more active - with opinion leaders influencing others after first receiving information themselves. Uses and gratifications theory from 1974 examined why individuals choose certain media and what needs they fulfill, such as diversion, personal relationships, identity, and surveillance. More recent cultural studies look at how audiences can interpret media messages in dominant, negotiated, or oppositional ways based on their own perspectives.