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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.


    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

    Magic Bullet Theory

    • Predicts effects
      • immediate,
      • direct and
      • uniform
    • on everyone who receives a mass media message.

  • 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.


  • 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
        • Especially subcultures
  • 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

1969 study on TV violence

National Institute of Mental Health study found 80% of programming had violent content.

  • 1969 study on TV violence
    • National Institute of Mental Health study
      • 80% of programs have violent content
        • Frequent
        • Unrealistic
      • 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
        • Multi-step flow
      • If useful, diffusion
      • Adoption

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