A researcher has an experiment requiring many participants and so they are running each condition in a separate room on a separate computer. Each of a few graduate students are taking turns administering the experiment to the participants depending upon their schedules with some running participants in the morning and others running participants in afternoon. A couple of the graduate students do not have a great command of English so they present hand written instructions to the participants instead of speaking the instructions to them. It takes the better part of the semester to collect data from enough participants.
How many confounds are in this scenario and identify whether each one is more likely to cause variability in how the scores are generated or in how they are measured.
How many confounds are in this scenario and identify whether each one is more likely to cause variability in how the scores are generated or in how they are measured.