Chitkara Media School on Instagram: "Understanding the Hypodermic Needle Theory What if media messages worked like an injection—straight into the mind, with no filters and no questions? 💉🧠 The Hypodermic Needle Theory highlights a time when media was believed to have immediate and powerful effects, shaping public opinion through newspapers, radio broadcasts, and wartime propaganda. Today, audiences are thinkers, critics, and creators. Yet revisiting this early theory helps us understand how pe