Revisiting the plastic number theory from the perspective of perceptual psychology

Architect Hans van der Laan spent his lifetime studying human perception of proportion. His work led to the development plastic number system. In this system every step represents a group fractions that describe objects similar sizes. Indeed, each is defined as ‘representative size’ sizes are perceptually indiscriminate from one another. Over decades research, Van conducted series experiments test The clarity with which he approached proportion provides suitable ground for testing by scientific means. To take first in direction, it useful consider Laan’s approach within context sensory psychophysics and Gestalt psychology. Highlighting these connections suggests specific directions future research opens new chapter studies on architecture.