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Nursing Evaluation01:15

Nursing Evaluation

The evaluation stage signals the end of the nursing process. The nurse gathers evaluative data to assess whether or not the patient has attained the expected results. Whereas the nurse collects data in the nursing assessment to identify the patient's health concerns, the evaluation stage data determines if the indicated health issues are resolved. Evaluative data collection includes two sections: the data acquired to evaluate patient outcomes and the time criteria for data collection.
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Documentation in Long-Term and Home Healthcare Setting

Documentation in long-term care facilities and home healthcare settings is crucial for ensuring continuous, coordinated, and comprehensive care for patients. Each setting has its specific documentation processes and tools:
Long-Term Care Facilities
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

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Quality Assurance01:19

Quality Assurance

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The Anchoring-and-Adjustment Heuristic01:25

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Case Studies01:22

Case Studies

There are many research methods available to psychologists in their efforts to understand, describe, and explain behavior and the cognitive and biological processes that underlie it.

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Related Experiment Video

Updated: Jul 7, 2026

Development of a Virtual Reality Assessment of Everyday Living Skills
10:32

Development of a Virtual Reality Assessment of Everyday Living Skills

Published on: April 23, 2014

Evaluation of the NITV CVSA.

Harry Hollien1, James D Harnsberger, Camilo A Martin

  • 1Institute for Advanced Study of the Communication Processes, University of Florida, Gainesville, FL 32611, USA. hollien@grov.ufl.edu

Journal of Forensic Sciences
|February 19, 2008
PubMed
Summary
This summary is machine-generated.

This study found that the Computer Voice Stress Analyzer (CVSA) performed at chance levels for detecting deception. Both trained operators and scientists showed low accuracy, indicating the voice stress analysis tool is unreliable.

Related Experiment Videos

Last Updated: Jul 7, 2026

Development of a Virtual Reality Assessment of Everyday Living Skills
10:32

Development of a Virtual Reality Assessment of Everyday Living Skills

Published on: April 23, 2014

Area of Science:

  • Forensic Linguistics
  • Psychophysiology
  • Speech Analysis

Background:

  • Voice stress analysis is a controversial technique used to detect deception.
  • The Computer Voice Stress Analyzer (CVSA) by the National Institute of Truth Verification (NITV) is a widely employed tool.
  • Previous evaluations of CVSA accuracy have yielded mixed results.

Purpose of the Study:

  • To rigorously evaluate the performance of the NITV's CVSA.
  • To assess CVSA accuracy across laboratory-controlled and field-recorded speech samples.
  • To determine the reliability of CVSA in differentiating between truthful and deceptive statements under stress.

Main Methods:

  • A double-blind study was conducted using speech recordings from 48 participants (24 male, 24 female).
  • Participants made derogatory statements about issues they held strong views on, under controlled deceptive and shock-induced stress conditions, and in a field procedure.
  • Examiners included NITV-certified scientists, experienced NITV operators, and experimental phoneticians.

Main Results:

  • True positive (hit) rates for all examiners ranged from chance to approximately 50-65% across all conditions and material types.
  • False positive rates were equally high, and often higher, than true positive rates.
  • CVSA system sensitivity statistics indicated performance at approximately chance level.

Conclusions:

  • The CVSA system demonstrates limited efficacy in accurately detecting deception.
  • The system's performance is comparable to random chance, suggesting unreliability in practical applications.
  • Further research is needed to validate or refute the scientific basis of voice stress analysis technology.