Hypodermic Needle Theory - emerged in the late 1920s and gained prominence until after World
● It asserts that media and information messages, like a hypodermic needle, inject their
messages directly to the audience.
● media is described as powerful conduits of messages and audiences will believe anything
told to them by the media.
● introduced by Harold Laswell in 1927 in his book entitled Propaganda Techniques in the
WW1 and leading up to WWII