Experimental Design
1. Explain the difference between between-subjects and within-subjects experiments, list some of the pros and cons of each approach, and decide which approach to use to answer a particular research question.
2. Define random assignment, distinguish it from random sampling, explain its purpose in experimental research, and use some simple strategies to implement it
3. Define several types of carryover effect, give examples of each, and explain how counterbalancing helps to deal with them
