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BIS 104 PQ 8 ans 2011 - (3 Sufficiency This category of...

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BIS 104 PQ 8 ans 2011 8. Proof of a scientific hypothesis is convincing only if supported by a diverse series of experimental evidence. Your assigned reading “Rules of Evidence I” , describes three types of evidence.: Experiments that establish (1) plausibility , (2) necessity , or (3) sufficiency Define each of these experimental criteria (one or two sentences for each). (1) Plausibility : Observations or measurements that lead to a correlation in time and space between two events or agents. It is, suggestive evidence that does not provide direct proof of a relationship. (2) Necessity : This category of evidence is obtained through loss-of-function type experiments where a single suspected agent is blocked or inhibited, and its effect on normal activity is determined.
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Unformatted text preview: (3) Sufficiency : This category of evidence comes from experiments in which the variable of interest is artificially introduced into an experimental system (i.e., gain-of-function). The system is then monitored to see if there is a gain-of-function due to the activity or presence of the single variable. Which of the above 3 criteria provided the weakest type of evidence? Explain the basis for your choices. Plausibility, since it provides only a correlation, not definitive proof of a cause and effect. . Which provides the strongest? Sufficiency: A single variable by itself stimulates an event that would not otherwise occur at that time/place....
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