The graph below shows the results of an experiment in which mice ...

Question

The graph below shows the results of an experiment in which mice learned to run through a maze. (b) Which was the control group and which the experimental? Why was a control group needed?

Accepted Answer

Hey everyone let's take a look at this question together. Which of the following will be the control group when testing the hypothesis that rewarding food increases the learning rate in birds. So let's recall what we know about experiments and the different groups that make up those experiments. And so we know that we're talking about the control group. Which means that the other group we have is the experimental group. And we know from previous content that the experimental group is the one that we are observing to see if there's any change. And so we have our experimental group and we have our control group. And so since we're testing the hypothesis that rewarding the birds with food increases their learning rate, we're looking for an increase in the learning rate by rewarding them with food. So in the experimental group we are rewarding the birds with food. So rewarding birds with food. And so because that's our experimental group and the tests that we're doing to see if there's any change, we know that the control group is the one that does not get that special treatment. So that means that they do not get a reward so they're not rewarded with food or they're not rewarded with completing the task which means that answer choice B. Is the correct answer. Because that control group is the one that does not receive any special treatment. And so because they complete that task they don't get any food. And so that would make be the correct answer. And so that would make answer choice A. And C. Incorrect because we're not rewarding the birds whether they complete the task or not and then D. Is incorrect because A. Is incorrect. And so that leaves B, the only correct answer. I hope you found this video to be helpful. Thank you and goodbye.

The graph below shows the results of an experiment in which mice learned to run through a maze. (b) Which was the control group and which the experimental? Why was a control group needed?

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