What term describes the science of designing and arranging things for ease and safety of use?

The term that describes the science of designing and arranging things for ease and safety of use is ergonomics. Ergonomics is focused on understanding human capabilities and limitations to create spaces, products, and systems that improve comfort, efficiency, and safety for users. This discipline takes into account physical, cognitive, and environmental factors to optimize the interaction between people and their environments.

In the context of residential interior design, ergonomics plays a crucial role in ensuring that spaces are not only aesthetically pleasing but also functional and accessible. Designers apply ergonomic principles when selecting furniture, layout, and even materials to ensure that individuals can use spaces without strain or discomfort.

In contrast, anthropometry is the study of human body measurements, but it does not encompass the broader range of design considerations that ergonomics covers. Proportioning relates to the aesthetic arrangement of forms but does not focus on user interaction. Kinesiology is the study of movement and physical activity, which, while relevant, does not specifically address the aspects of design and arrangement for usability and safety as ergonomics does.