Ecause researchers are generally more concerned with establishing internal validity rather than external validity, they are typically more concerned with and less concerned with .

Random assignment;

Random selection

Explanation:

Random assignment is a technique for placing subject into the different groups so that the characterstics of the sample can be equally distributed while Random Selection is how we select individuals from the population to participate in study.

hello,

question- which is one way that muslims scholars contributed to the scientific recolution?

answer- well you see in the religion islam the religion muslims practice there was the prophet muahmmed peace be upon him who did good things such as sit in a sertian posotion to use the toilet which then the scientist of this generation later found that it was good for you there are many more things like this.

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