Related Concept Videos
02:07Blind Procedures
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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...
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01:11Blinding
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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.
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00:46Feedback Inhibition
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Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
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01:13Review and Preview
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Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
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01:10Review and Preview
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In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...
Percentiles are a type of fractile that partition data into...
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01:43Proofreading
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Related Experiment Video
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Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
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Double-blinded manuscript review: Avoiding peer review bias
Ariel Santos1, David S Morris, Rishi Rattan
1From the Division of Trauma, Acute Care Surgery and Surgical Critical Care (A.S.), Texas Tech University Health Sciences Center, Lubbock, Texas; Division of Trauma, Intermountain Medical Center (D.S.M.), Murray, Utah; Division of Trauma Surgery and Critical Care (R.R.), University of Miami Miller School of Medicine, Miami, Florida; and Division of Trauma (T.Z.), University of Chicago Medicine and Biological Sciences, Chicago, Illinois.
The Journal of Trauma and Acute Care Surgery
|April 26, 2021
Summary
No abstract available in PubMed .
