Design and Methodology

For this assignment you are required to answer four short essay questions on general design and methodological issues. Some questions may require a longer answer than others

Please answer the questions in full text form rather than by using bullet points and other summarising methods.
1. “Science is the best way to answer questions, explain causal relationships in nature, and test the effectiveness of treatments.” Do you agree with this statement? Take a position and defend it.

2. What is the best design for an intervention study? Describe a hypothetical intervention study and outline how you would design such a study. Make sure that you describe all of the essential features of the design that you choose, and make sure that you point out why each of those features is necessary for your design.

3. “There is more likely to be a causal relationship between the variables investigated in a quasi-experimental design than a correlational design”. Yes? No? Maybe? Demonstrate your knowledge and understanding of these designs in answering this question. Examples of your own devising will help.

4. Summarise the logic underlying null hypothesis significance testing and the steps involved in testing a statistical hypothesis in the context of a hypothetical experimental study of your own devising. For every point you make, you need to relate it back to your hypothetical study.

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