Does the journal allow additional materials to be submitted along with the article?

Yes, many scholarly journals permit or encourage the submission of supplementary materials alongside the main article manuscript. Supplementary materials typically include datasets, extensive methodologies, additional figures or tables, multimedia files, or detailed appendices that support but are not essential to the core argument presented in the main text. Journal policies vary significantly, so authors must carefully verify the target journal's specific guidelines regarding acceptable file formats, size limitations, and content types. These materials undergo peer review with the main manuscript and must adhere to ethical standards. Crucially, supplementary information should not circumvent length limits by containing vital arguments; it should only provide supporting evidence or detail that cannot be reasonably included within the main text. The primary application is enhancing research transparency and reproducibility, allowing readers deeper insight without burdening the article narrative. Typical supplementary items include raw data for verification, extended methodological protocols, high-resolution images, detailed derivations, or extensive questionnaire templates. During submission, authors upload these files separately via the journal's online manuscript system. Their inclusion adds significant value by providing comprehensive evidence supporting the study's findings and conclusions.