1. Discuss the advantages and disadvantages of personally administered, questionnaires, mail questionnaires, and electronic questionnaires.
2. Every data-collection method has its own built-in biases. Therefore, resorting to multi-methods of data collection is only going to compound the biases. Critique this statement.
Chapter 11
1. What are the differences between causal and correlational studies?
2. Explain how the selection of participants may affect both the internal and external validity of your experiments.
