Spencer is conducting a meta-analysis on the association between exercise and wellbeing. During this process, he looks up a database of PhD theses for dissertations that examined exercise and wellbeing but were never published. Spencer's actions will contribute to:
a. reducing the file-drawer effect in the meta-analysis.
b. increasing the file-drawer effect in the meta-analysis.
c. reducing statistical power of the meta-analysis.
d. increasing statistical power of the meta-analysis.
Answer: a. reducing the file-drawer effect in the meta-analysis.
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