Fitts' Law

A prediction model used in human-computer interaction. It states that the time required to move to a target area rapidly increases as the distance to the target increases. The law was proposed by Paul Fitts, an American psychologist, in 1954 as a mathematical model of movement with limited cognitive capacity.

Fitts hypothesized that one would quickly select its first apparent target when reaching for an object before considering alternatives — a phenomenon called "target fixation." This tendency would increase progressively with increased distance between the subject and object until it eventually became exponential (i.e., too far away).

More terms you might want to know

Card Sorting

A UX design technique in which you divide your users into groups, show them cards with different names for unrelated objects and ask them to categorise them.

Grid

A system of columns and rows designers use to create layouts. It's used in graphic design and web development to align elements for easy use on the page. Grids are a key part of design because they help you create balance, rhythm, proportion and hierarchy in your layout.

Pilcrow

Also called a paragraph mark, a paragraph sign or section marker, is a typographical character for separating paragraphs. It looks like a "¶".

Typesetting

The process of arranging type to make written material readable. The arrangement of type involves decisions about individual letters and words (e.g. line spacing, letter spacing, and word spacing) and more significant page layout decisions (e.g., margins, headline position on the page).

Agile Design

A process that involves assigning people to work on different parts of the design and making sure that they focus on one area at a time. This method is an excellent way to release products more quickly and with higher quality.

The most common types of agile methods are Scrum, Kanban, XP and Agile Modeling. It can often be difficult for companies to make the switch because it requires significant changes in how product development occurs.

Font Colour

Also known as text colour, is a visible attribute of text determined by the combination of text and background colour.

Calligraphy

The art of decorative writing practised by many different people in many different cultures. Calligraphy is sometimes used to add a personal touch to wedding invitations, special event invitations, and other projects.

Font Type

Most typefaces are classified into one of five basic classifications: serif, sans serif, script, monospaced, and display.

Typeface Design

The art and discipline of putting together set of typefaces into a harmonious and readable type system. A typeface designer spends much time considering many things such as clear visual message, readability at different sizes, legibility at small point sizes, ease of use for printing processes on its own or over the top of other fonts.

Dark Pattern

A type of user interface design carefully crafted to trick people into doing things they might not want to do.

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