To Prepare:

• Review the Learning Resources on quantitative research.
• Consider internal and external validity, the differences between them, and threats to validity when conducting research.
• Reflect on which quantitative research design controls for all threats to internal validity.

By Day 3

Post your initial response to the following:

• What is the difference between internal and external validity?
• Select two internal validity threats and describe each.
• After examining each category and list of designs, determine which design controls for all threats to internal validity. Explain how this design controls for all threats.