Perception of risks from electromagnetic fields: a psychometric evaluation of a risk-communication approach.

Risk analysis : an official publication of the Society for Risk Analysis · 1994 · Mixed · Low evidence

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MixedLow evidencePaper 5450

In a pretest-posttest evaluation of a brochure communicating EMF health risks, respondents’ naive beliefs about the potential for EMF exposure to cause harm were highly influenced by specific content elements of the brochure.

Study snapshot

PublicationRisk analysis : an official publication of the Society for Risk Analysis · 1994

Study typeother

Reported directionMixed

Evidence ratingLow

Abstract

Potential health risks from exposure to power-frequency electromagnetic fields (EMF) have become an issue of significant public concern. This study evaluates a brochure designed to communicate EMF health risks from a scientific perspective. The study utilized a pretest-posttest design in which respondents judged various sources of EMF (and other) health and safety risks, both before reading the brochure and after. Respondents assessed risks on dimensions similar to those utilized in previous studies of risk perception. In addition, detailed ratings were made that probed respondents' beliefs about the possible causal effects of EMF exposure. The findings suggest that naive beliefs about the potential of EMF exposure to cause harm were highly influenced by specific content elements of the brochure. The implications for using risk-communication approaches based on communicating scientific uncertainty are discussed.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionmixed

PopulationNot supplied

Sample sizeNot supplied

ExposureELF

Evidence strengthLowConfidence: 66% · Peer reviewed: yes

Main findings

Outcomes measured

Risk perception ratings of EMF and other health/safety risks (pre/post brochure)
Beliefs about possible causal effects of EMF exposure
Influence of brochure content elements on beliefs about EMF harm

Limitations

Sample size not reported in abstract
Population characteristics not described in abstract
No details provided on specific brochure content elements or magnitude of changes
Outcome measures and statistical results not reported in abstract

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": "ELF",
    "source": "power-frequency",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Risk perception ratings of EMF and other health/safety risks (pre/post brochure)",
    "Beliefs about possible causal effects of EMF exposure",
    "Influence of brochure content elements on beliefs about EMF harm"
  ],
  "main_findings": "In a pretest-posttest evaluation of a brochure communicating EMF health risks, respondents’ naive beliefs about the potential for EMF exposure to cause harm were highly influenced by specific content elements of the brochure.",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in abstract",
    "Population characteristics not described in abstract",
    "No details provided on specific brochure content elements or magnitude of changes",
    "Outcome measures and statistical results not reported in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic fields",
    "power-frequency",
    "ELF",
    "risk perception",
    "risk communication",
    "brochure",
    "scientific uncertainty",
    "pretest-posttest",
    "psychometric evaluation"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.2,
      "reason": "Discusses communicating scientific uncertainty about EMF health risks, which may relate to institutional risk communication, but no specific organization is mentioned."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1111/j.1539-6924.1994.tb00293.x
PubMed: 7800866

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