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Related Concept Videos

Communication01:03

Communication

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Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.
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Communication01:28

Communication

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Sharing information, concepts, and emotions to foster mutual understanding is communication. The sender, recipient, and transaction must be considered in this manner. The sender is the person who shares the message, the recipient is the person who receives and understands the message, and the transaction is the method used to deliver the message and the variables that affect the communication's context and surroundings. The nurse-client connection is built on therapeutic communication.
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The history of therapeutic communication can be traced back to Florence Nightingale, who emphasized the importance of developing trusting relationships with patients. She taught that the presence of nurses with patients results in therapeutic healing.
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Hazard Rate01:11

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The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
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Hazard Ratio01:12

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The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
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Reliability and Validity01:29

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Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
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Related Experiment Video

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A Broadly Applicable Warning Response Index: Cross-Hazard Validation for Enhanced Early Warning Communication.

Haoran Xu1, Yi Lu1, Yanlin Chen2

  • 1Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu, China.

Risk Analysis : an Official Publication of the Society for Risk Analysis
|February 9, 2026
PubMed
Summary

Multi-hazard early warning systems (MHEWS) effectiveness relies on strong warning dissemination and communication (WDC). A new Warning Response Index (WRI) better predicts WDC effectiveness by assessing the intention-action gap in protective behaviors.

Keywords:
intention–action gapmeasurementmulti‐hazard early warning systemsrisk communicationwarning response index

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Area of Science:

  • Disaster Risk Reduction
  • Community Resilience
  • Communication Science

Background:

  • Multi-hazard early warning systems (MHEWS) are crucial for disaster risk reduction and community resilience.
  • Challenges in warning dissemination and communication (WDC) limit the effectiveness of MHEWS.
  • Existing measures inadequately capture the gap between warning response intention and actual protective actions.

Purpose of the Study:

  • To develop and validate a broadly applicable instrument, the Warning Response Index (WRI), for assessing WDC effectiveness.
  • To examine the reliability, validity, and dimensional structure of the WRI.
  • To investigate the intention-action gap in protective behaviors.

Main Methods:

  • Development and validation of the Warning Response Index (WRI).
  • Analysis of data from two surveys (n=1580).
  • Examination of internal consistency, dimensional structure, and predictive validity of the WRI.

Main Results:

  • The WRI demonstrated a stable multidimensional structure with high reliability and validity across various hazard types.
  • The translation of warning response intentions into protective actions was found to be weak, especially during extreme weather.
  • The WRI more effectively predicted overall WDC effectiveness compared to unidimensional measures.
  • Conventional measures failed to adequately capture the intention-action gap.

Conclusions:

  • The WRI is a reliable and valid instrument for assessing WDC effectiveness in MHEWS.
  • Addressing the intention-action gap is critical for improving MHEWS outcomes.
  • Future WDC strategies should be tailored to message and recipient characteristics to enhance protective actions.