Information for authors can be found this
page, which includes information on Manuscript Preparation
Resources, further Explanation of the Journal Sections, Editorial
Manager Instructions, Templates and File Formats, and Submitting
Electronic Supplementary Information (see also below).
LaTeX Style for Psychometrika Submissions
Authors using LaTeX may use the Psychometrika LaTeX Styles for submissions.
The files have not been updated in some time, but they have
worked with recent (2019) versions of TexLive and MikTex.
Regarding Electronic Supplementary Information (Data sets
and computer code)
In the interest of transparency and reproducibility of
results, Psychometrika strongly encourages
authors to include with published papers, where possible,
electronic supplementary materials which will be published online
on SpringerLink with the article. This includes data and code.
Data and code should be clearly documented to allow replication
and verification of the results presented in the final version of
the paper. Authors should specify the type of supplementary
material they will be able to provide at the time of submission,
and this information will be taken into account in the review