<bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Background:</b> Millions of scientific research posters are presented at conferences every year, yet little research exists to guide poster design. <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Literature review:</b> There is widespread dissatisfaction with the state of scientific research posters. Research from technical and professional communication suggests that the typical research poster could be improved with complete sentence assertion headings. <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Research question:</b> How does poster format affect audience comprehension and reader preference? <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Research methodology:</b> In Study 1, undergraduates read posters in two different formats—Complete Assertion Headings and short, Topical Phrase Headings—and answered questions about comprehension and preference. In Studies 2a (engineering educators) and 2b (engineering faculty), participants answered questions about their perceptions of three different poster formats: Complete Assertion Headings, traditional IMRD headings + Abstract, and the popular #betterposter billboard style template. In a short teaching case study, students used these research results to develop their own posters and adapted the templates that we presented. <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Results:</b> Study 1 found that Complete Assertion Headings, compared to topical headings, improved student recall, and students preferred the complete assertion format. Study 2a found that engineering educators preferred nontraditional poster formats (both the Complete Assertion Heading and the #betterposter format) to the traditional IMRD + Abstract format. Study 2b found that mechanical engineering faculty preferred the Complete Assertion Heading to other formats. <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Conclusion:</b> We recommend that practitioners consider using Complete Assertion Headings on their posters, and we provide examples of exemplary student posters.

The cognitive theory of multimedia learning (CTML) describes a set of empirically tested principles that technical and professional communication research largely acknowledges as important to the design of presentation slides. However, presenters often run into difficulties understanding how to apply CTML principles to contexts in which it has not been tested. We present three pilot studies that extend our knowledge of how to apply CTML principles. Pilot study one suggests that CTML principles can be effective for presenting advanced research to expert audiences. Pilot study two highlights the importance of user testing nonessential images added primarily for visual interest, specifically finding that visual organizer images such as Microsoft PowerPoint's SmartArt, can backfire by unintentionally indicating imprecise relationships while adding little in terms of visual interest. Pilot study three suggests that, when needing to present a long quotation, presenters should avoid verbatim reading and consider abridging or paraphrasing the quotation.