To repeat an experiment, under the same conditions, allows you to (a) estimate the variability of the results (how close to each other they are) and (b) to increase the accuracy of the estimate (assuming that no bias – systematic error – is present).... These are the 2 reasons for the repetition of one experiment.
Why is generalization and replication in research so important?
- The original results were a false positive.
- The replicated results were a false negative.
- Both studies were correct but differed due to unknown differences in experimental conditions or methodologies.
What is the difference between repetition and replication?
Repetition occurs when multiple sets of measurements are made during one scientific investigation. Replication occurs when a scientific investigation is reproduced by another person. Repetition is multiple trials, when replication is when you redo the entire experiment.
Why does repetition improve memory?
Yvonne suggests six simple tips to help improve memory:
- Write it down, say it aloud. As soon as you’ve jotted something down and the brain has acknowledged that word or phrase, a connection has been made.
- One thing at a time. Concentrate.
- Use visual prompts.
- Train your brain.
- Stimulate the grey matter.
- Get some exercise.
Why is repetition important in a science experiment?
How do you know if a study is internally valid?
- Your treatment and response variables change together.
- Your treatment precedes changes in your response variables.
- No confounding or extraneous factors can explain the results of your study.
Why do scientists need to replicate experiments?
Finally, the researcher can draw conclusions about an experimental. Scientists must replicate experiments to ensure validity and account for error.
Why is replication important in science?
Common choices that can affect the reliability of results by being made after the experiment has started include when to stop the experiment, how to analyse the data, and which subgroup comparisons to carry out. The replication reduces variability in experimental results.
What is a well replicated experiment?
A well-replicated experiment ensures that the effect of one thing (the independent variable) on the other (the dependent variable) is real, true, reliable, valid. It accounts for the variation we expect to exist in nature.
What does it mean when a scientist replicates an experiment?
Getting the same result when an experiment is repeated is called replication. If research results can be replicated, it means they are more likely to be correct. Repeated replication of investigations may turn a hypothesis into a theory. On the other hand, if results cannot be replicated they are likely to be incorrect.
Why is it important to repeat a scientific experiment?
Replication is important in science so scientists can “check their work.” The result of an investigation is not likely to be well accepted unless the investigation is repeated many times and the same result is always obtained.
What is it called when you get the same results?
Getting the same result when an experiment is repeated is called replication . If research results can be replicated, it means they are more likely to be correct. Repeated replication of investigations may turn a hypothesis into a theory.
Do scientists replicate every study?
Scientists do not try to replicate every investigation, but some are repeated many times. For example, many researchers tried to replicate the vaccine-autism study described above. Why do you think so much effort was made to replicate this particular study? What was the outcome of the additional research?
