In an experiment,researchers exposed half of the participants to loud noise during a memory-encoding task.The room was quiet for the other half of the participants.Later,all participants were given a memory test and the number of correct items recalled was obtained for each participant.What is the independent variable?
A)the number of items recalled
B)the noise level during the encoding task
C)the time interval between encoding and recall.
D)the probability of being assigned to the two groups

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated by the researcher, which in this case is the noise level during the encoding task. Therefore, option B is the correct answer. Option A is the dependent variable, as it depends on the independent variable. Option C is not relevant as it is not mentioned in the experiment. Option D is not the independent variable as it is not being manipulated by the researcher.

In an Experiment,researchers Exposed Half of the Participants to Loud