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Hypodermic
Needle
Theory
History
The "hypodermic needle theory" implied mass media had a direct, immediate
and powerful effect on its audiences. The mass media in the 1940s and 1950s
were perceived as a powerful influence on behaviour change.
Several factors contributed to this "strong effects" theory of
communication, including:
* the fast rise and popularisation of radio and television
*the emergence of the persuasion industries, such as advertising and
propaganda
* the Payne Fund studies of the 1930s, which focused on the impact of motion
pictures on children
* Hitler's monopolization of the mass media during WWII to unify the German
public behind the Nazi party
The theory suggests that
the mass media could
influence a very large
group of people directly
and uniformly by
‘shooting’ or ‘injecting’
them with appropriate
messages designed to
trigger a desired response.

They express the view
that the media is a
dangerous means of
communicating an idea
because the receiver or
audience is powerless
to resist the impact of
the message.

People are seen as
passive and are seen as
having a lot media
material "shot" at
them. People end up
thinking what they are
told because there is no
other source of
information.
Example of the hypodermic needle
theory being successful
In 1938, the now-infamous radio dramatisation of the science fiction novel 'war of
the worlds' by HG Wells was performed like a contemporary new broadcast, a
technique that had been used to heighten realism and dramatic effect. However as
audiences listen to this stimulation of a news broadcast as it occurred every 40
minutes some people concluded that it was in fact a real account of an invasion
from Mars, headed to the roads, hid in homes and loaded their weapons in an
attempt to defend themselves against the supposed imminent attack.
Strengths and weaknesses of the theory
Strength
• The use of numbers and statistics can
be effective and reliable way of seeing
trends.
• Effect studies often involve a large
numbers of participants and sometimes
extend over long periods of time.

Weakness

• Has little place in contemporary
analysis of audience
reception, although it is possible that
audiences revert to such thinking from
time to time, these types of instances
are rare, and don’t carry a great deal of
momentum, if anything audiences
today tend to be a lot more
sophisticated and aware of how media
messages are constructed.
• Too simplistic, changes to attitudes and
beliefs are not always observable or
easily measured inn the way physics;
changes are. Audiences interpret
media differently