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Public Relations and Mass
Communication Theories
Systems theory of PR
- System--a set of
interdependent units which endure within an established
boundary by responding and adjusting to change pressures
from the environment.
- Closed system
- Impermeable boundary:
- cannot exchange matter,
energy or information with its
environment.
- Does not adapt to external
change.
- Static.
- Eventually disintegrates.
- Open system
- Boundary is
permeable.
- Exchanges inputs and outputs
through boundary.
- Responsive&emdash;adjusts and
adapts&emdash;to environmental change.
- Survival and growth depend on
interchange with environment.
- Inputs from the
environment
- can be reactions to system's
outputs,
- can be result of change
independent of outputs,
- can have impact on system's
goals.
- Adjustments directed internally
/ externally
- Internal outputs
change/maintain goals.
- External outputs
change/maintain environmental
conditions.
- Interchange with environment is
cyclical.
- Must continually adjust in
order to maintain
equilibrium&emdash;homeostasis
- Relatively open/closed
systems
- No social system is totally
open or totally closed.
- Systems are relatively open or
relatively closed.
- Relatively closed
systems use reactive program planning and
management.
- Activated only when
disturbed&emdash;reacting to crises,
problems.
- Relatively open
systems
- Rely on
feedback&emdash;positive or negative.
- Negative feedback is
most important for equilibrium.
- Error-message.
- System adjusts.
- Positive feedback
results in amplifying or maintaining
course.
- Anticipate change;
- Influence environment;
- Proactive
- Actively probe and monitor
environment.
- Use early warning to
- Make
adjustments
- Generate internal and
external output
- Prevent or avoid
disturbances or problems later.
- Leads to control over its
domain in a crisis.
- Effective in preventing
crises.
- Organizations as
systems
- PR is part of
adaptive subsystem, distinct from
production, maintenance & managerial
subsystems.
- PR is
boundary-spanner.
- Proactive PR keeps
organization sensitive to environmental
changes.
- PR in open
system
- PR actively
monitors social environments and make
adjustments.
- The most-open
systems use two-way symmetrical model:
- PR practitioners
are managers of change.
- Public relations
establishes and maintains mutually
dependent relationships between an
organization and its publics.
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PR in open system, cont.
- PR efforts are part of an
organization's managed behavior to achieve
goals.
- Goals can be achieved by
- Maintaining existing
relationships in the face of changing
conditions.
- Continually adjusting
relationships with publics in response to changing
social environments.
- Adapting goals to
accommodate change pressures.
- Employs communication as a tool
to help organization and its publics solve
problems:
- sharing information;
- solving
problems.
- Proactive corrective actions
may be most useful aspect of the open systems model.
- Reduces amount of effort
required and trauma associated with crisis-oriented
reactive PR.
Communication Theory

Mass
Communication

Mass Communication Theories
- Limited Effects of Mass
Communication
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Magic Bullet
Theory
- Predicts
effects
- immediate,
- direct and
- uniform
- on everyone who
receives a mass media message.
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- 1933 Payne Fund
Studies
- Herbert Blumer study of movies
& children
- Recollections of adults,
college students
- Conclusions:
- *Source of
imitation
- *Unintentional
learning
- *Emotional
possession
- Little lasting influence
- 1933 Peterson-Thurston
Study
- Movies and children
- Influence on children's
attitudes toward issues
- Measured attitude change
after 2-3 films
- Conclusions
- Uniform effects; Magic
Bullet, S --> R
- *Cumulative
effects
- Change in attitude = Change
in behavior
- 1940 Cantril Study
- 1938 broadcast of War of the
Worlds
- Limited, flawed
- Conclusions:
- *Individual
differences
- Social
categories
- *Critical
ability
- Education
- Departure from Magic Bullet
- WWII&emdash;Military-Hovland
- Effectiveness of training
films
- Frank Capra "Why We
Fight"
- Pretest, posttest measures of
attitudes, opinions, retention of facts
- Conclusions:
- *Limited
effects
- Increased factual
knowledge: education
- Cumulative effects
- 1948 The People's
Choice
- Lazarsfeld: FDR vs. Wilkie prez
campaign.
- Panel study -- May-November
1940.
- *Web of
influence&emdash;family, friends,
associates
- Media part of Web of
Influence.
- The People's Choice,
cont.
- *Two-step flow:
- Opinion leaders attend to
media, personal influence.
- Similar socioeconomic status;
role in diffusion of innovations, cultural and
technical change.
- Effects of 1948 media
campaign
Media
Influence
- 14%Activated --
getting people to do what predisposed to do,
socially based predisposition
- Increased
interest ---> greater
exposure
- Selective
exposure
- Crystallize
intentions
- 53% Reinforced
--Voters' intentions partisan
- 8% Converted --
Weakly tied to party; doubtful.
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- Led to New theory: Media have
selective and minimal consequences
- Only one set of influences
among many.
- Based on importance
of
- Learning,
- Individual
differences
- Social categories
- Uses & gratification
theory
- Specific messages from specific
media
- Selectively attended
to
- Audience actively &
freely selects content
- Not passive as in Magic
Bullet
- Decisions influenced by
personal interests, desires, values and habits
of seeking gratification
- Television Studies
- 1950s TV
Studies
- Effects on children
- Reduced time
playing
- Modified free
time
- Postponed
bedtime
- 1960s TV Studies
- Wilbur Schramm: First
large-scale study
- Uses & gratifications of
children
- Patterns of
viewing
- Fantasy, passive
pleasures, escape, wish fulfillment,
diversion.
- Incidental learning --
middle class instruction
- Related to age,
ability, needs, preferences & viewing
patterns. Families chief influence on
taste.
- Not necessarily
objective or correct.
- Positives: broadens
knowledge, vocabulary, current events,
accelerates intellectual
development
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1969 study on TV
violence
National Institute of Mental
Health study found 80% of programming had violent
content.
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- 1969 study on TV
violence
- National Institute of Mental
Health study
- 80% of programs have
violent content
- Hours of children's
viewing most violent.
- No evidence of
catharsis
- * Observational
learning -- imitation of model
- Adolescent aggression
projects
- 10-year longitudinal
study
- Frequency of viewing
violence related to level of aggression
(correlational)
- Effects
cumulative
- 1970s TV studies
- Found:
- Not giving full
attention
- Prosocial
effects
- TV violence harmful to
some
- If
predisposed
- In some environmental
contexts
- Subcultural
influence
- 1982 TV Violence
- Exposure ---> increased
aggression
- Primetime remains
violent
- Children's weekend programs
more violent than primetime.
- Sex &
violence
- Viewing sexual content has
minimal effects
- Viewing sex with violence
effects:
- Desensitization to plight
of rape victims.
- Increased aggression
toward women.
- Belief in rape
myth.
- 90s studies on TV
Violence
- Other effects:
- If not more
aggressive,
- More easily
controlled,
- More susceptible to
repression.
- TV Violence Circle of
Blame
- Networks
- Advertisers
- Producers
- The Public
- The government
- The medium
- Commercial structure of
TV
- What we can do (PR
campaigns)
- Endorse legislation in
support of public-interest programming
requirements.
- Write networks, etc., to
complain & praise.
- Watch less.
- Watch
critically.
- Watch selectively: choose
programming to enlighten, enrich and inspire.
Long-term effects of Mass
Communication
- Social & cultural
change
- Two theories of long-term
influences for social & cultural change:
- Accumulation of minimal
effects theory;
- Adoption of innovation
theory.
- Repeated exposure to consistent
message can change people, society.
- Accumulation theory
- Significant changes in beliefs,
attitudes & behavior over time, if
- media focus repeatedly on an
issue
- and are consistent in
presenting uniform interpretation,
- especially when audience
knows little or nothing about the issue from other
sources.
- Accumulation theory
factors
- Media persistence of
focus.
- Media consistency of
interpretation.
- Media corroboration or
monopolization.
- Prominence: Saturation leads
to salience.
- High, low threshold
issues.
- Examples: Watergate,
Vietnam, smoking, AIDS, Monica, Enron
- Adoption theory
- Media help society adopt new
technologies, ideas, standards, fads &
fashions
- Adoption curve
- Awareness
- Media spread information:
ads reports
- Early adopters/opinion
leaders
- If useful,
diffusion
- Adoption
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