Resonate Elements are the 13,000+ attributes you know and love from our continuous research in our National Consumer Study. You can find Resonate Elements in the middle of the Taxonomy in Segmentation Center - click Show More to see all the Resonate Elements that are available to you.
As you add attributes to your audience definition, icons will help you determine what the data source is for each attribute. Resonate Elements will have the "Re" icon in the middle panel and in the audience definition. This is helpful information when you're building audiences for use in the Audience Crosstab visualization since not all data types can be saved in an audience that you wish to use in Audience Crosstab.