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A researcher is interested in studying how adolescent social media use influences their self-esteem. He gathers a
A researcher is interested in studying how adolescent social media use influences their self-esteem. He gathers a
group of adolescents who use social media an average of 0-3 hours per week, and a group of adolescents who use social media for an average of 4-8 hours per week and compares their ratings of self-esteem on a scale from 1 to 10. He finds that those who use social media more (4-8 hours per week) have higher self esteem than those who use social media less (for 0-3 hours per week)
What is the confound?
How could the confound be fixed?
A group of preschool teachers is interested in how different types of rewards can influence children's ability to learn new material. In Ms. Cindy's class, they give the children M&M's each time they correctly identify a letter. In Ms. Marisol's class, they give the children stickers each time they correctly identify a letter, and in Ms. Jenny's class, they give verbal praise (e.g., "great job!") each time they get a correct answer. They find that the children who were given verbal praise learned more letters at the end of the month than the other two groups.
What is the confound?
How could the confound be fixed?
