A meta-analysis about the effect of emotions on creativity

The goal of this meta-analysis is to better understand the effect of emotions we experience on our creativity. More precisely, the goal is to better understand the mechanisms of such relationship, i.e. how emotions impact creativity through cognitive flexibility (the ability to switch between various perspectives) and cognitive persistence (the ability to sustain the prolonged effort).
The students will be involved in the eligibility classification process: the researcher will have identified a list of potential articles to include in the meta-analysis and will provide inclusion/exclusion criteria. Students will have then to classify such articles into several possible categories: (1) excluded, (2) included, (3) not sure.
There will be two rounds of classification, each of them with a specific of inclusion/exclusion criteria. First, students will classify articles based on the information available in their abstracts, and second, students will classify articles based on the information available in the full-text articles. This work would require the involvement of two students.
Thanks in advance.