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

Colour Theory

The study of how colours are related to one another. It is about how we see colour, mix and modify it (according to our needs), and put colour together to achieve the desired mood or atmosphere.

Affordance

Affordances describe a relationship between the environment and an animate object, classified as either positive or negative.

Items, such as a car that leads to movement, have a positive affordance. Things like stairs that lead upwards have a negative affordance because they will not allow for any other form of movement other than up or down if used accordingly.

Triadic Colours

A triad is a group of three colours that are equally spaced on the colour wheel.

Trim Size

The width and height of a document, after having been cut down to size from a larger sheet.

Ellipsis

Also known as a suspension point, is a series of dots (…) that is used either as a substitute for some text that has been omitted from a sentence or when the author does not wish to pause in their writing.

Tracking

The adjustment of all characters in a line by moving them closer together or farther apart.

PSD File

A digital file created in Adobe's illustration and photo manipulation software Photoshop. PSD files are used to edit images, create graphics, art, icons, images, among a plethora of other things.

Soft Return

Also called a line break, when you want to keep the text in one paragraph and not follow it with an airy space.

Scope Creep

Scope creep is when the scope of a project starts to grow without any agreement on how it's going to be paid for. Creep happens because items and features are tacked on top of the original scope of work agreed upon in the original contract.

Type Classification

A system used to describe and identify typefaces by their basic visual characteristics.

Problem?

Got a suggestion or found an issue with the glossary?
Let me know!