Natural selection is the change of a species traits and characteristics over time to adapt to its environment. Over a period of time, the species will change and evolve because of its changing traits to adapt.
According to Yerkes-Dodson law if you had an important presentation coming up, you would want to be a bit nervous/aroused to perform your best.
According to this law there is a relationship between performance and arousal. The law goes to say that sometimes, people are able to do their best when they are a bit nervous.
But according to him, this would only work till a certain point because when the nervousness gets to be too much it could lower performance.
This is best applicable to athletes or some one who is waiting to write an exam.
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When an argument is deductively valid, its <u>truth of premises </u>guarantee the truth of its <u>conclusion</u>.
<h3>What is a deductively valid argument?</h3>
A deductive argument is an argument intended by the arguer to be deductive, that is, to provide a guarantee of the truthfulness of the conclusion provided that the premises of the argument are true.
It can also be expressed by saying that, in a deductive argument, the premises are intended to provide strong support for the conclusion that if the premises were true, the conclusion could not be false.
The argument in which the premise succeeds in securing the conclusion is called a valid (inferential) argument. If a valid argument has a true premise, the argument is also said to be valid. All arguments are valid or invalid, and valid or not; there's no middle point, like there's some relevance.
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