IB9CU0 - Research Methods in Accounting - Ali and Zhang 2015 - Research Report Assignment Help

Assignment Task:

IB9CU0 Research Methods in Accounting Assignment Help

Task

Your task will be to replicate the paper “CEO tenure and earnings management” (Ali and Zhang, 2015). The ?rst thing you should do is to read carefully the paper by Ali and Zhang (2015), understanding the article is key in order to be able to replicate the results. Replicating the results on this paper will allow you to demonstrate that you acquired the knowledge, skills and ability to do empirical analysis. To do so, you will need to go through the whole ‘research process’ (i.e. from collecting the data to interpreting the results).

You are required to produce three outputs:

1. Main Dataset
2. Do-File
3. Report

Replicating the results in Ali and Zhang (2015) will involve working with several different databases. Your ‘Main Dataset’ should contain all the information you need before starting the replication task. The ‘Main Dataset’ together with your ‘Do-File’ should allow others to reproduce the results in your ‘Report’ with only one click (i.e. Ctrl+D). Therefore, you should check that there are no mistakes in your ‘Do-File’ before submitting anything. Include as many comments as you consider necessary in your ‘Do-File’ to explain what are you doing in each line of commands.

Research Assignment Questions/Guideline

1. What is ‘Research Question’ in Ali and Zhang (2015)? What type of question is it (i.e. existence/descriptive/causal)? Why is important to answer it according to the authors?

2. State Hypothesis 1 and Hypothesis 2 in Ali and Zhang (2015). Explain the arguments that lead to both hypotheses and its empirical predictions.

3. What is the main dependent variable (i.e. conceptual level) in Ali and Zhang (2015)? How do they measure it? What other proxies do they use in the sensitivity analysis?

- Explain the consequences of having ‘measurement error’ in the dependent variable.

4. What is the main independent variable in Ali and Zhang (2015)? How do they measure it?

- Explain the consequences of having ‘measurement error’ in the independent variable.

5. What data do you need to estimate models (1), (2), (3), and (4)? And to test H2? Make a table including the following:

- Variable Name

- Definition

6. Use WRDS to collect all the data needed for replicating Ali and Zhang (2015). Getting your data ready for the analysis will require cleaning and merging several databases. Create a ‘Do-File’ for this purpose, the result of this do-file should be your ‘Main Dataset’. Make sure that you explain how you ‘clean’ the data and merge the different databases. You will have to provide both the ‘Do-File’ and the ‘Main Dataset’.

7. Following the explanations provided in Ali and Zhang

- Estimate Model (1) in Ali and Zhang (2015)

- Estimate Model (2) in Ali and Zhang (2015)

- Generate all the control variables needed to estimate models (3) and (4)

8. Now you can reproduce Figure 2 & Table 1 in Ali and Zhang (2015). Are your results comparable with Ali and Zhang (2015)? Comment on this (e.g. difference/similarities in the distribution of key variables). If not, go back and check that you did not make any mistake. Think about the research choices you made and how this could have affected the outcomes so far

Are you sure that there are no mistakes (or a research choice different from Ali and Zhang (2015)) in your codes/merging/cleaning the data, etc? If your results are still different from those in Ali and Zhang (2015) explain why you think this is the case.

9. Following the explanations provided in Ali and Zhang (2015):

- Estimate Model (3) in Ali and Zhang (2015).

- Estimate Model (4) in Ali and Zhang (2015).

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