ICPSR's recently redesigned web site also has a new search engine, in which the automatic stemming of search terms to retrieve partial-word matches, as described on the Searching Tips page, currently does not work, unfortunately. So, for instance, a search for psych (to find psychologists, psychiatry, etc.) or a search for pregnan (to find pregnant, pregnancy, etc.) currently retrieves no results. In the Social Science Variables Database, which now contains over a million variables, the same searches will retrieve results, but those are (as far as I could ascertain) only literal matches of the search term, as found in abbreviations in variable labels and such. Since the Boolean OR operator is not supported, the only workaround for the time being appears to run multiple searches for all forms of a word, e.g., one for pregnant, one for pregnancy, etc., to be sure to find all matching studies/variables. Any updates will be provided as additions to this entry.