Assistant professor of Interior Design and Architecture, Dr. Tiziana Proietti, recently published her research, “Revisiting the plastic number theory from the perspective of perceptual psychology,” in the Architectural Science Review.
Abstract
Architect Hans van der Laan spent his lifetime studying human perception of proportion. His work led to the development of the plastic number system. In this system every step represents a group of fractions that describe objects of similar sizes. Indeed, each step is defined as the ‘representative size’ of a group of sizes that are perceptually indiscriminate from one another. Over decades of research, Van der Laan conducted a series of experiments to test his system. The clarity with which he approached the perception of proportion provides a suitable ground for testing the plastic number by scientific means. To take the first step in that direction, it is useful to consider Van der Laan’s approach within the context of sensory psychophysics and Gestalt psychology. Highlighting these connections suggests specific directions for future research of the plastic number and opens a new chapter in studies on proportion in architecture.
A team of Construction Science and Architecture students from the Gibbs College of Architecture made their mark on the national stage this week, earning third place out of 37 universities competing at the National Association of Home Builders (NAHB) Student Competition, held during the International Builders' Show in Orlando, February 16-18, 2026.
The American Institute of Architects (AIA) has elevated Gary Armbruster, FAIA, ALEP to its prestigious College of Fellows—AIA’s highest membership honor—for his exceptional work and sustained contributions to architecture and society. Fellowship recognizes architects who have achieved a standard of excellence in the profession and made a significant impact at a national level. Members elevated to this distinction carry the FAIA designation after their name.
Students from the Spring 2026 Graduate 4 Architecture Design Studio, led by Professor Amy Leveno, exhibited their work at the School of Visual Arts. The exhibition, titled Reimagining the OU School of Visual Arts, featured drawings, models, and animations developed throughout the semester's studio project. The show was hosted in The Spotlight, a creative gallery space located on the first floor of the Fred Jones Art Center, and ran from January 20–30, 2026.
