Deliverable 3 - Review of the Literature



As you are learning from the course materials, research proposals and studies are rooted in problem-solving. Their purpose is to answer a question and/or solve a problem. Another critical step in the process is reviewing previous studies to determine if answers to or solutions for the issue in question already exist. This is known as a literature review, which is an exploration and analysis of the most recent or—in some cases—seminal studies on a particular topic or problem. Using the instructions below, conduct a literature review for an identified research question. Remember that you are examining existing studies about the selected topic, not the topic itself.


Conduct a literature review to help identify how the proposed research study will contribute to the current knowledge about the topic.

  • Include at least ten (10) scholarly sources from the last five years that are relevant to the research question.
  • In the literature review, analyze the content of the articles reviewed, compare findings in different articles, and integrate the literature into an organized discussion.
  • Explain how your proposed study would fill a gap in the literature.

Research Question

What are the defining characteristics and indicators of normal emotional health and  

optimal mental functioning across diverse populations, and how do these factors contribute to  

overall well-being?

5 Scholarly Resources that should be used:


Chen, Y., Demnitz, N., Yamamoto, S., Yaffe, K., Lawlor, B., & Leroi, I. (2022). Defining brain health: a concept analysis. International journal of  

geriatric psychiatry, 37(1).

Doorley, J. D., Goodman, F. R., Kelso, K. C., & Kashdan, T. B. (2020). Psychological flexibility: What we know, what we do not know, and what we  

think we know. Social and Personality Psychology Compass, 14(12), 1-11.

Lane, R. D., & Smith, R. (2021). Levels of emotional awareness: theory and measurement of a socio-emotional skill. Journal of Intelligence, 9(3),  


Quadt, L., Critchley, H., & Nagai, Y. (2022). Cognition, emotion, and the central autonomic network. Autonomic Neuroscience, 238, 102948. 

Schweizer, S., Gotlib, I. H., & Blakemore, S. J. (2020). The role of affective control in emotion regulation during adolescence. Emotion, 20(1), 80.

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