Humans also interact with their environments based on their sensory capabilities. The field of human perception systems, like perceptual psychology and cognitive psychology, are not exact sciences, because human information processing is not a purely physical act, and because perception is affected by cultural factors, personal preferences, experiences, and expectations. So human scale in architecture can also describe buildings with sightlines, acoustic properties, task lighting, ambient lighting, and spatial grammar that fit well with human senses. However, one important caveat is that human perceptions are always going to be less predictable and less measurable than physical dimensions
Human scale in architecture is deliberately violated:
- or monumental effect. Buildings, statues, and memorials are constructed in a scale larger than life as a social/cultural signal that the subject matter is also larger than life.
- for aesthetic effect. Many architects, particularly in the Modernist movement, design buildings that prioritize structural purity and clarity of form over concessions to human scale. This became the dominant American architectural style for decades.
- to serve automotive scale. Commercial buildings that are designed to be legible from roadways assume a radically different shape. The human eye can distinguish about 3 objects or features per second. A pedestrian steadily walking along a 100-foot (30-meter) length of department store can perceive about 68 features; a driver passing the same frontage at 30 mph (13 m/s or 44 ft/s) can perceive about six or seven features. Auto-scale buildings tend to be smooth and shallow, readable at a glance, simplified, presented outward, and with signage with bigger letters and fewer words.
Oscar Niemeyer uses human scale for aesthetic effect, using structural purity and clarity of form. He creates an scale that even tho looks monumental from a distance, is really well adapted to the human measurement, so that it won't be overwhelming.