While conducting a before and after quasi experiment on fire preparedness at a local university and before the post-test was adm
inistered, a major fire occurs in a dorm on campus. Although the post test showed increased fire preparedness, the researchers could not conclude that their experimental treatment was the cause. What source of internal validity were the researchers most likely concerned about?
The researchers were most concerned about External events.
<h3><u>Explanation: </u></h3>
Quasi-experimental designs are different from true experimental designs. They resemble the experimental research but it is not the real one. There are various types of quasi-experiment design, one of the important designs is the pretest and posttest design which is discussed in the above scenario.
The most likely reason for the experimental effect is based on selection bias. Self-fulfilling Prophecy & Instrument Decay might be the potential cause of the internal validity that is linked with the experiment done by the staff.
The independent variable in a research is that variable that the researcher wants to use to find out if it affects the dependable variable. The researcher manipulates the independent variable to see if it brings any change to the dependent variable. In this example, the researchers wants to test if classroom wall hangings can increase GPA, hence he wants to see if manipulating the classroom wall hangings can have an impact on the GPA of students.
<span>Assuming that this is referring to the same list of options that was posted before with this question, the correct answer is the law having to do with runaway slaves. </span>
