The subtitle of the journal in which the article is published; part of the journal metadata
Journal subtitles are rare in APA and partner journals, but are commonly used in the Journal of Personality and Social Psychology. This journal has three permanent sections. Each of which has a title and an editor. The title (for example, “Personality Processes and Individual Differences”) should be tagged as the <journal-subtitle>.
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Any combination of:
...
<journal-meta>
<journal-title-group>
<journal-title>Journal of Personality and Social
Psychology</journal-title>
<journal-subtitle>Personality Processes and
Individual Differences</journal-subtitle>
</journal-title-group>
<issn>0022-3514</issn>
<publisher>
<publisher-name>American Psychological Association</publisher-name>
</publisher>
</journal-meta>
...
journalmeta3.ent