Mobile devices require a tight focus in content presentation, with the first screen limited to only the most essential information.| Nielsen Norman Group
Although successful websites typically have high usability, average sites can hurt their business by copying design elements that don't work well in other contexts.| Nielsen Norman Group
Collapsing content within accordions shorten pages and reduce scrolling, but they increase the interaction cost by requiring people to decide on topic headings. Longer pages can benefit readers.| Nielsen Norman Group