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In order to transform the observation of a natural phenomenon into a valid scientific experiment the following conditions must be fulfilled
* It has to be a quantitative observation, that is a relationship between quantities expressing the measures of physical or chemical variables has to be obtained;
* The way in which the measure has been achieved has to be carefully described so that the measure can be repeated with exactly the same procedure by different scientists, in different places and in different times;
* The measurement error has to be carefully evaluated on the ground of the characteristics of the adopted measure procedure and instruments;
* Every time the measure is repeated by different persons in different places and in different times the same results have to be obtained within the measurement errors;
For example the so called cold fusion is not a valid scientific experiment since the results obtained in the first experiment by Fleischmann and Pons are not reproducible in other labs and the experiment procedure has never been explained in detail.
Naturally, if someone claims a result but the claim is based on an observation that is not a valid experiment, it is not a scientific result, but nothing can be told on the base phenomenon, simply it has not been observed correctly.
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∙ 11y ago
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When the experiment is complete what does the researcher do?
Repeats the experiment for validity
What is the soundness of conclusions can be drawn from an experiment?
Validity
What is the soundness of the conclusions that can be drawn from an experiment?
Validity
What the meaning of experement?
an experiment is an orderlyprocedure carried out with the goal of veryfying,refuting,or establishing the validity of hypothesis
Why is validity important in science experiments?
It is important because if the experiment or experimenter is not a very trustworthy person then that often also makes the information he gets from an experiment invalid.
When the experiment is complete what does the researcher do?
Repeats the experiment for validity
What increases the validity of an experiment?
Repeated trials of said experiment.
Can a study have internal validity but not external validity?
Yes. Internal validity is whether or not the experiment is studying what it intends to. External validity is whether or not the study can be generalised outside of the study. For example, if you had a perfect experiment set up, that measures something perfectly, then it will have internal validity. You haven't, however, shown that you would get the same results in different cultures, or in different time periods. Thus the experiment may not have external validity.
What is the soundness of conclusions can be drawn from an experiment?
Validity
What is the soundness of the conclusions that can be drawn from an experiment?
Validity
How does sample size affect the validity of an experiment?
The sample size has no effect on the validity of an experiment: instead, it is the experimental procedure and integrity of the experimenters.The sample size can affect conclusions that may be drawn from an experiment. The larger the sample is, the more reliable these conclusions are.
What is an open experiment?
an experiment where the subjects know what is going on. they are not tricked or fooled with any tactics to increase validity such as placebos etc.
Is a testable hypotheses?
One where the validity of the hypothesis can be determined by some test or experiment.
Ability to take findings of experiment and apply to real world?
External Validity
Which step of scientific method do you perform after you form a hypothesis?
You need to design an experiment to test the validity of the hypothesis.
What the meaning of experement?
an experiment is an orderlyprocedure carried out with the goal of veryfying,refuting,or establishing the validity of hypothesis
Why is validity important in science experiments?
It is important because if the experiment or experimenter is not a very trustworthy person then that often also makes the information he gets from an experiment invalid.
