Example word phrases to be used in Research Paper Literature section for journal article

Here are some example word phrases that could be used in a literature study section of a research paper for a journal:

1. Previous research has established that...
2. Several studies have examined the relationship between [variable 1] and [variable 2].
3. [Author(s)] conducted a comprehensive review of the literature on [topic] and found that...
4. A number of studies have investigated the impact of [intervention] on [outcome].
5. Researchers have also explored the role of [factor] in relation to [outcome].
6. The literature suggests that there may be a link between [variable] and [outcome].
7. A growing body of research has focused on [area] and its potential impact on [outcome].
8. Despite the considerable amount of research conducted in this area, there is still some debate regarding...
9. The available evidence suggests that [hypothesis] is supported by the literature.
10. The findings from these studies have important implications for [field].