METHOD
Locating the Studies
The literature search was conducted with the key words mind mapping or mind mapping and experiment, with the studies
published between 1999 and 2013.The database we searched included Web of Science, Eric, Proquest , PsycINFO,
Wiley Online, Google Scholar, Science Direct and CNKI. In terms of the select of the papers, we set up several criteria.
First, the study must be related to teaching and learning. Second, the study had to have treatment and control groups,
that is, the effect of mind mapping and other activities had to be compared. Third, the study must randomly assigned
participants to groups. Forth, the study had to report sufficient data to allow an estimate of standardized mean difference
effect size.