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Related Concept Videos

The Scientific Method01:32

The Scientific Method

The scientific method is a detailed, empirical problem-solving process used by biologists and other scientists. This iterative approach involves formulating a question based on observation, developing a testable potential explanation for the observation (called a hypothesis), making and testing predictions based on the hypothesis, and using the findings to create new hypotheses and predictions.
Generally, predictions are tested using carefully-designed experiments. Based on the outcome of these...
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.
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.
Experimental Designs01:16

Experimental Designs

An experimental design is a systematic process that allows researchers to evaluate the relationship between dependent and independent variables. There are three widely used types of experimental design - pre-experimental design, true experimental design, and quasi-experimental design. In pre-experimental design, the researcher compares the data before and after some interventions or treatments. The true-experimental design has more than one purposefully created group, a commonly measured...
Study Design in Statistics01:15

Study Design in Statistics

A study design is a set of techniques that allow a researcher to collect and analyze data from different variables defined for a specific research problem. Statistics is commonly for effective study design and more robust experiments,
Does aspirin reduce the risk of heart attacks? Is one brand of fertilizer more effective at growing roses than another? Is fatigue as dangerous to a driver as the influence of alcohol? Questions like these are answered using randomized experiments with proper...
Group Design02:01

Group Design

The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between the two are due to...

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A Cross-Disciplinary and Multi-Modal Experimental Design for Studying Near-Real-Time Authentic Examination Experiences
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Published on: September 4, 2019

Learning from our GWAS mistakes: from experimental design to scientific method.

Christophe G Lambert1, Laura J Black

  • 1Golden Helix Inc., Bozeman, MT 59719, USA. lambert@goldenhelix.com

Biostatistics (Oxford, England)
|January 31, 2012
PubMed
Summary

Many genome-wide association studies suffer from design flaws, leading to inaccurate health policy decisions. Improving research requires addressing these fundamental issues rather than just statistical symptoms.

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Area of Science:

  • Genomics
  • Biostatistics
  • Epidemiology

Background:

  • Many genome-wide association studies (GWAS) exhibit design flaws, with confounding factors being common.
  • Statistical quality-control methods often address symptoms rather than fundamental research design issues.

Discussion:

  • Current genomic research frequently disconnects hypotheses from data collection, experimental design, and causal theories.
  • Association studies lacking causal frameworks, coupled with multiple testing errors, unduly influence healthcare and public policy.

Key Insights:

  • Genomic research needs a stronger connection between hypotheses, data, and causal mechanisms.
  • Over-reliance on statistical associations without underlying causal theories can lead to flawed conclusions.

Outlook:

  • Reinterpreting the scientific method for large-scale data analysis is crucial.
  • Emphasizing falsifiable hypotheses in genomic research will improve understanding of disease mechanisms and lead to more robust findings.