The document discusses different theories around how audiences engage with media texts:
1) Early theories viewed audiences as passive, believing all messages without thinking critically (the "hypodermic needle" effect). This underestimated audiences' abilities.
2) Stuart Hall's encoding/decoding model sees the audience as active - they make their own interpretations depending on factors like identity and opinions. Texts have no set meaning.
3) Reception theory focuses on the audience role in interpreting texts. Hall identified preferred, negotiated, and oppositional readings audiences can have.
4) Later theories see audiences as even more active, selectively engaging with media and picking aspects to incorporate into their identities (the "pick and mix"