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The appropriate number of sources for a literature review depends on the specific goals of the researcher and how extensively the topic has historically been studied. While empirical studies indicate that the average number of sources cited in professional psychology journal articles is approximately $$50$$, student assignments typically require a much lower minimum, though the core principles of strategically selecting high-quality, relevant sources remain consistent across both levels.

Number of Sources in a Literature Review

According to empirical studies, student literature review assignments typically require the same minimum number of sources as professional psychology journal articles, which cite an average of 50 sources.

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