read the journal article and critically evaluate the research study

Read the following journal article. Critically evaluate the research study it reports. Focus mainly on the “Introduction” and “Methods” sections of the article.

The article is: Hülsheger, U.R., Lang, J.W.B., Schewe, A.F., & Zijlstra, F.R.H. (2015). When regulating emotions at work pays off: A diary and an intervention study on emotion regulation and customer tips in service jobs. Journal of Applied Psychology, 100(2), 263-277.

Textbook: Gravetter, F.J., & Forzano, L.B. (2016) Research Methods for Behavioral Sciences (5th Edition.). NY: Wadsworth Cengage Learning

Attached the journal article and requirements