Before you start searching, it can be helpful to help identify the key aspects of your question. Consider as well if there are any possible synonyms/related terms for each aspect of your question. Your starting question can be broad, but ultimately your goal should be to narrow it down to something you can answer within the scope of your class project.
Start with a broad topic
Topic: Cognitive dissonance and shopping
Topic: Cognitive dissonance and dangerous work
Translate the topic into a question
Question: Do compulsive shoppers (or impulse buyers) experience cognitive dissonance?
Secondary question: Do they employ specific arguments or justifications to explain their habits?
Question: Do employees in dangerous jobs experience cognitive dissonance?
Secondary question: How do employees in dangerous jobs justify the risks of their employment?
Ways to narrow my research question
Develop an initial list of search terms to find related literature
Start thinking about alternative terms, or related terms, you might want to search in the library databases. This will help you find the most relevant literature.
For detailed instructions on how to conduct literature reviews, see the "Literature Reviews" section in the MRU Library Psychology guides.
Develop your own synthesis matrix to organize your notes and structure your literature review