Related Experiment Video
Updated: Aug 8, 2026
08:50
How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants
Published on: December 14, 2014
Placebo, meaning, and health
Bruce Barrett1, Daniel Muller, David Rakel
1Department of Family Medicine, University of Wisconsin-Madison, 777 South Mills, 53715, USA. bruce.barrett@fammed.wisc.edu
Perspectives in Biology and Medicine
|May 17, 2006
Summary
Placebo effects are crucial in evidence-based medicine and clinical practice, influencing health through intention, expectation, and meaning. Clinicians can leverage these effects with specific actions to enhance patient well-being.
Area of Science:
- Medical Theory
- Clinical Practice
- Psychoneuroimmunology
Background:
- Placebos are integral to randomized controlled trials for controlling non-pharmacological effects.
- Evidence-based medicine relies heavily on placebo principles.
- Placebo effects are often underestimated due to a focus on mechanistic pathways.
Purpose of the Study:
- To highlight the central role of intention, expectation, culture, and meaning in placebo effects.
- To introduce key dualities (body-mind, subconscious-conscious, passive-active) in understanding placebo phenomena.
- To integrate placebo and meaning effects into medical theory and clinical practice.
Main Methods:
- Conceptual analysis of placebo/meaning phenomena.
- Introduction of three core dualities: body-mind, subconscious-conscious, and passive-active.
- Identification of eight practical clinical actions.
Main Results:
- Intention, expectation, culture, and meaning are substantive determinants of health.
- Acknowledging placebo-related dualities is essential for research and theory.
- Eight clinical actions can empower patients and improve health outcomes.
Conclusions:
- Placebo and meaning effects are essential for a comprehensive understanding of human health.
- Clinical actions derived from placebo research can enhance patient care.
- Focusing on the patient's experience, including trust and reassurance, is vital.
Related Concept Videos
01:54The Placebo Effect
The placebo effect occurs when people's expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen.
02:07Blind Procedures
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which child was...
01:11Blinding
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
01:29Concepts of Health and Illness
Health is a condition of the body, mind, and spirit where an individual remains free from illness. Similarly, wellness is an active state, including living a lifestyle that promotes physical, mental, and emotional health. Physical health is critical for the overall well-being and can be affected by lifestyle, activity level, diet, and behavior. The highest attainable standard of health is a fundamental and universal human right. Consider Lisa, a fifteen-year-old born with congenital...
01:25Models of Health Promotion and Illness Prevention I
A model is a theoretical way to understand a concept or an idea. Models can overcome barriers to health regardless of diverse economic and cultural backgrounds. In addition, models make the task easier by providing different ways to approach complex issues. There are two major health promotion models: the health belief model and the health promotion model.
The health belief model (HBM) attempts to predict health-related behavior in specific belief patterns. According to the HBM, a person's...
The health belief model (HBM) attempts to predict health-related behavior in specific belief patterns. According to the HBM, a person's...
01:18Models of Health Promotion and Illness Prevention II
The person's health status fluctuates continually, varying from being in good health to becoming ill and returning to being healthy. To understand the concept of illness prevention, there are two models. First, the health-illness continuum model is a graphic representation of an individual's wellness. It states that a person is considered healthy in the absence of physical disease and the presence of good emotional health.
The agent-host-environment model states that disease results from...
The agent-host-environment model states that disease results from...