A replication study is a study that
is an independent repetition of an earlier, published study, using sufficiently similar methods (along the appropriate dimensions) and conducted under sufficiently similar circumstances
.
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. Clearly, this definition requires some explanation.
What is a replication study in research?
Replication is a term referring to
the repetition of a research study
, generally with different situations and different subjects, to determine if the basic findings of the original study can be applied to other participants and circumstances.
What is the main purpose of a replication study?
This definition reduces emphasis on operational characteristics of the study and increases emphasis on the interpretation of possible outcomes. The purpose of replication is
to advance theory by confronting existing understanding with new evidence
.
What is a replication study in statistics?
Replication: In statistics, replication is
repetition of an experiment or observation in the same or similar conditions
. Replication is important because it adds information about the reliability of the conclusions or estimates to be drawn from the data.
Why do researchers replicate studies?
It is very important that research can be replicated, because
it means that other researchers can test the findings of the research
. Replicability keeps researchers honest and can give readers confidence in research. … If the research is replicable, then any false conclusions can eventually be shown to be wrong.
What is an example of replication?
Replication is the act of reproducing or copying something, or is a copy of something.
When an experiment is repeated and the results from the original are reproduced
, this is an example of a replication of the original study. A copy of a Monet painting is an example of a replication.
What makes a good replication study?
Evaluating the replication should involve reporting two tests: 1)
the size, direction and confidence interval of the effect
, which tell us whether the replication effect is significantly different from the null; 2) an additional test of whether it is significantly different from the original effect.
What are the two types of replications?
There are two types of replication Blomquist1986:
literal and construct
.
Why is replication so important?
If research results can be replicated, it means they are more likely to be correct. 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.
How do you write an introduction for a replication study?
– Introduction:
quickly establish the problem
and its importance to the field – Materials and Methods: in this section you need to describe the data and methods you used. – Results: the core results of the paper. – Discussion: usually the last page, discuss the implications/limitations of the paper.
What is the benefit of replication in statistics?
Using replicates offers three major advantages:
Replicates can be used to measure variation in the experiment so that statistical tests can be applied to evaluate differences
. Averaging across replicates increases the precision of gene expression measurements and allows smaller changes to be detected.
How do you know if you can replicate a study?
The most direct method to assess replicability is
to perform a study following the original methods of a previous study and to compare the new results to the original ones
.
What happens if a study Cannot be replicated?
If a finding can’t be replicated, it suggests that
our current understanding of the study system or our methods of testing are insufficient
. … When a study cannot be replicated, it suggests that our current understanding of the study system or our methods of testing are insufficient.
What is the difference between replication and repetition?
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 trails, when replication is when you redo the entire experiment.
Why do we repeat experiments 3 times?
Repeating an experiment more than once
helps determine if the data was a fluke
, or represents the normal case. It helps guard against jumping to conclusions without enough evidence.
Why do scientists need to repeat experiments?
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.
