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Related Concept Videos

Controls in Experiments01:13

Controls in Experiments

When conducting an experiment, it is crucial to have control to reduce bias and accurately measure the dependent variables. It also marks the results more reliable. Controls are elements in an experiment that have the same characteristics as the treatment groups but are not affected by the independent variable. By sorting these data into control and experimental conditions, the relationship between the dependent and independent variables can be drawn. A randomized experiment always includes a...
The Scientific Method in Nursing Process01:18

The Scientific Method in Nursing Process

The scientific method provides the foundation for any research. It is the most reliable and objective of all forms of gaining knowledge and guides in applying research-based evidence in practice and conducting future research.
When using research findings to change practice, one must understand the process used to guide a study. The scientific method is a systematic, step-by-step process that supports the data's validity, reliability, and generalizability. As a result, findings can be safely...
Control Systems01:10

Control Systems

Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
The Scientific Method02:40

The Scientific Method

Research is what makes the difference between facts and opinions. Facts are observable realities, and opinions are personal judgments, conclusions, or attitudes that may or may not be accurate. In the scientific community, facts can be established only using evidence collected through empirical research.
The Scientific Method03:50

The Scientific Method

Chemistry is an empirical science. Scientists often pose questions to understand the chemistry in everyday life and seek answers to these questions. To achieve this, scientists follow a definitive series of steps that together make up the Scientific Method. This approach involves making observations, asking questions, building a hypothesis, conducting experiments, analyzing results, and forming a conclusion.

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[Appropriate application of statistical methods in physiological research].

Zhongguo ying yong sheng li xue za zhi = Zhongguo yingyong shenglixue zazhi = Chinese journal of applied physiology·2018
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A Naturalistic Setup for Presenting Real People and Live Actions in Experimental Psychology and Cognitive Neuroscience Studies
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A Naturalistic Setup for Presenting Real People and Live Actions in Experimental Psychology and Cognitive Neuroscience Studies

Published on: August 4, 2023

The control principle in scientific research.

Liang-ping Hu1, Xiao-lei Bao, Qi Wang

  • 1Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing 100850, China. lphu812@sina.com

Zhong Xi Yi Jie He Xue Bao = Journal of Chinese Integrative Medicine
|August 19, 2011
PubMed
Summary

The control principle is crucial for reliable research. Proper use of control groups ensures convincing and valid scientific conclusions, avoiding common design errors.

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Area of Science:

  • Research Design
  • Scientific Methodology

Background:

  • The control principle is fundamental to sound research design.
  • Inadequate or improperly implemented control groups undermine research validity and reliability.
  • Multi-factor designs often necessitate multiple control groups.

Purpose of the Study:

  • To elucidate the meaning and significance of the control principle in research.
  • To identify and explain common forms of control in experimental studies.
  • To highlight and analyze frequent errors in control group implementation.

Main Methods:

  • Literature review and conceptual analysis of research design principles.
  • Examination of common control group strategies.
  • Case examples of control-related errors in research.

Main Results:

  • The control principle ensures research conclusions are convincing and reliable.
  • Properly setting control groups is essential for valid experimental outcomes.
  • Common errors include incomplete or excessive control, impacting study integrity.

Conclusions:

  • Adherence to the control principle is vital for robust scientific inquiry.
  • Understanding and avoiding common errors in control group design enhances research quality.
  • Effective use of control groups strengthens the evidence base in scientific studies.