As part of the research for her persuasive speech on Parkinson's disease, Alissa needs to find recent articles published in general interest periodicals and academic journals. The best resource for her is a

Periodical and academic database

Explanation:

A periodical database contain s millions of citiations for articles in the arts, humanities, and social sciences and across every other fields. An academic database is a collection of information that is commonly used for research and writing, including access to academic journals.

So for the researcher to gain the information needed, he has to consult these two databases.