Answer: alternative D.
Explanation: Dr. DeVries should choose his sample population randomly in order for his research to be representative, even having a specific population, which is high school seniors, that he wants to study. By <u>choosing specifically students from an exclusive college preparatory school, he isn't considering how students from other schools might perform in his research test</u>. This would be a very important step for him to understand how the practice in problem solving affects the ability related to it. Otherwise, he will have a distorted result.
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Answer: Yes your homework is right.
Explanation: I know because I did the same homework last night.
Yea, it is <u>true</u> that psychologists use a systematic method to conduct psychological research in order to increase consistency across studies.
<h3>What is the psychological research process? </h3>
The psychological research process makes use of observation and experiments for evaluating different behavior of people compared to a focused group.
Therefore, it starts from asking a question, collecting data, assessing of data, and deriving final conclusions.
Learn more about psychological research here:
brainly.com/question/1204644
