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Style: attract attention, avoid distraction!
Content: sharp and compact!
Size: DIN-A0 paper
Tool: usually with Power Point or Tikz/Beamer in LaTeX
Arrangements: horizontal or vertical
Ideas about style and format and various templates:
background knowledge in a paradigm of research and motivation for a scientific contribution: a good introduction explains the relevance of the research question for a scientific paradigm.
data, e.g., grammars, examples, experiments; decisions to data classifications and empirical design. The methodological decisions follow from the research question.
qualitative and/or quantitative report. Use illustrations (tables, graphs) to facilitate reading.
Integrate the findings to the available knowledge; present analytical models for understanding the data.
core points in a concise way
For the presentation of language data, please follow the Leipzig Glossing Rules.
For the citation of bibliographical sources, you may follow the Generic Style Rules for Linguistics, or other professional guidelines for linguistic publications. The space is limited: you may abbreviate first names of authors, journal titles, omit subtitles, place of publication, or titles of collective volumes.
guidelines of the Linguistic Society of America: LSA Annual Meeting Poster FAQs
Colin Purrington's blog on Designing conference posters.
Posters in teaching: poster session on Field Methods, Language Documentation, and Cognitive Linguistics (University of Michigan).
Use the footer to localize your research in a certain project or institution, acknowledgments, information about funding, etc.
Google > Images > click Tools > go to Usage rights > select Creative Commons license