Experimental Design Worksheet for 12th Grade Psychology

📚 Topic Summary

Experimental design is the process of planning a study to test a hypothesis. It involves identifying variables, creating control groups, and deciding how data will be collected and analyzed. A well-designed experiment minimizes bias and allows researchers to draw valid conclusions about the relationship between variables. This worksheet helps you practice these essential skills for psychology research.

🧠 Part A: Vocabulary

Match the following terms with their correct definitions:

Answer Key:

1-D, 2-C, 3-A, 4-E, 5-B

📝 Part B: Fill in the Blanks

Complete the paragraph using the words provided: random assignment, confounding variable, operational definition, replication, validity.

In experimental design, it's crucial to ensure ___________, meaning the study measures what it intends to measure. Researchers use ___________ to place participants into groups, minimizing bias. A ___________ is a factor other than the independent variable that might produce an effect in an experiment, and needs to be controlled. An ___________ provides a specific, measurable way to define a variable. Finally, ___________ of the study is important to confirm the results.

Answer Key:

validity, random assignment, confounding variable, operational definition, replication.

💡 Part C: Critical Thinking

Imagine you want to test the hypothesis that listening to classical music improves test scores. Describe how you would design an experiment to test this hypothesis, including identifying the independent and dependent variables, control and experimental groups, and how you would control for potential confounding variables.