Tip #45: Exploding Subject Terms in EBSCO APA PsycInfo vs. EBSCO MEDLINE
On the EBSCO platform (or EBSCOhost, if you prefer), MEDLINE and APA PsycInfo both have searchable thesauri. However, while these two thesauri are both hierarchical, EBSCO does not index them in the same way, which leads to inconsistent explosion behavior. This post addresses just those two databases, but the issue itself is relevant across the EBSCO platform. According to EBSCO's documentation, only MEDLINE, CINAHL, Environmental Policy Index and ERIC support traditional explosion . Those of us who search PubMed are accustomed to how the use of the search tag MeSH (i.e., [mesh] or [mh]) defaults to "explode." In PubMed, exploding begins at the selected term (e.g., Sleep), and retrieves results for that term and everything narrower, all the way to the bottom of the tree. There is no need to manually explode on any narrower terms, even if those terms, (e.g., Sleep Hygiene), have their own narrower terms. The MEDLINE thesaurus works the same way on EBSCO. In the image be