Chapter 10 activity - in class work PDF

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in class work ...

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Jami Goldstein

November 2019 Chapter 10 activity

1. Having a friendly (versus a stern) teacher for a brief lesson, causes children to score better on a test of material for that lesson. IV? – Type of Teacher DV? – Children’s test scores Potential confounds? -

The material could be more interesting to the children, so they retain information better. The temperature in the room could be affect test scores.

How would you design a between-subjects study? Make sure to include how you would control for extraneous variables and whether you would use a posttest only vs. a pretest/posttest design. -

Friendly group & Stern Group Posttest only

How would you design a within-subjects study? Make sure to include how you would control for potential confounds and whether you would use a repeated-measures vs. a concurrent-measures design. -

Breaks, Counter balancing, and different material covered. Repeated-measures

2. Practicing the piano for 30 minutes a day (compared with 10 minutes a day) leads to better piano performance. IV? – practice time (how long) DV? – piano performance Potential confounds? -

Maybe the subject enjoys piano so much so they pick it up easily. Maybe the subject has a musical background or previous knowledge about piano.

How would you design a between-subjects study? Make sure to include how you would control for extraneous variables and whether you would use a posttest only vs. a pretest/posttest design. -

10 min & 30 min Pretest/posttest design

How would you design a within-subjects study? Make sure to include how you would control for potential confounds and whether you would use a repeated-measures vs. a concurrent-measures design. -

Pre > 10 min > Post, Pre > 30 min > Post, Counter balancing too

3. Drinking sugared lemonade (compared to sugar-free lemonade) makes people better able to perform well on a task that requires self-control. IV? – type of lemonade DV? – how well task is performed that requires self-control Potential confounds? -

Maybe they also drank or ate another thing that helps with self-control Maybe how much sleep they got the night before could affect it as well. It could be a placebo effect

How would you design a between-subjects study? Make sure to include how you would control for extraneous variables and whether you would use a posttest only vs. a pretest/posttest design. -

Sugared and Sugar free lemonade Pretest/posttest design

How would you design a within-subjects study? Make sure to include how you would control for potential confounds and whether you would use a repeated-measures vs. a concurrent-measures design. -

Pre > sugar lemonade > post, pre > sugar free lemonade > post Repeated-measures...