true or false

styles 14. A first review of the literature helps you to make an informed decision about your research approach. 15. A critical literature review ensures that a clearer idea emerges as to what variables will be important to consider, why they are considered important, and how they should be investigated to solve the problem. 16. PhD theses often contain an exhaustive review of the literature in a specific area. 17. Articles and books that were written thirty or even forty years ago should never be included in the literature review. 18. Providing inaccurate information regarding the sources, making it impossible to find them is a form of plagiarism