A researcher observes children in a classroom during their f…
A researcher observes children in a classroom during their first year of school. While observing, she scores the children on their behaviors. For instance, she assigns them scores on focus and activity level. Then, she examines whether their scores on these items accurately identify which students will be diagnosed with ADHD by the end of grade school. If the researcher’s behavioral observations accurately identify which students get diagnosed at a later point with ADHD, this means her results have what type of validity?
Read DetailsA researcher is studying whether a new drug effectively redu…
A researcher is studying whether a new drug effectively reduces blood pressure. To do this, he identifies 50 participants who have baseline high blood pressure. He randomly assigns 25 participants to take a pill that contains the new drug and 25 participants to take a pill that is a simple calcium supplement. The group that receives the new drug is referred to as:
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