Question

A researcher uses a within-subjects design in which one group completes a difficult puzzle and the second group completes an easy puzzle. He finds that participants who completed the difficult puzzle first were able to learn about the puzzle and completed the easy puzzle quicker, compared to participants who did the easy puzzle first. What type of threat to internal validity was described in this example

Answer 1

b. Carryover effects

Step-by-step explanation:

THESE ARE THE OPTIONS FOR THE QUESTION BELOW

a. Sampling effects

b. Carryover effects

c. Participant attrition

d. Participant fatigue

From the question, we are informed about a researcher who uses a within-subjects design in which one group completes a difficult puzzle and the second group completes an easy puzzle. He finds that participants who completed the difficult puzzle first were able to learn about the puzzle and completed the easy puzzle quicker, compared to participants who did the easy puzzle first. In this case, the type of threat to internal validity was described in this example was Carryover effects. A carryover effect can be regarded as an effect which is been carried over from one experimental condition up to another experimental condition. It is any lingering effects resulting from a previous experimental condition which has any on current experimental condition.Common type of carryover effect is known as practice effect , in this effect participants perform a task better when performing in later conditions since there was a chance to practice it in time past.