Scientific category · 6 concepts

Behavior and motivation

Effects that describe progress, immersion, unfinished goals, remembered experiences, time pressure, and other forces that shape continued action.

Questions this category answers

What sustains progress?
Which moments shape the memory?
Is the product supporting autonomy rather than exploiting it?

Research context: Motivation, behavioral science, and experience research

Reference set

Explore the concepts

A rising channel marks the balance between increasing skill and increasing challenge.

Behavior

Flow

Flow is a deeply absorbed experience associated with clear goals, immediate feedback, concentrated attention, and a workable balance of challenge and skill.

Progress steps become closer together and more frequent near the finish marker.

Behavior

Goal-Gradient Effect

Motivated effort can increase as a salient, valued goal appears closer, although progress framing and context shape the pattern.

A user path goes directly to an action while bypassing a nearby instruction manual.

Behavior

Paradox of the Active User

People often begin productive action immediately instead of investing first in broad instruction that might improve later efficiency.

The same task block stretches to fill a larger available time container.

Behavior

Parkinson’s Law

Work can expand to occupy the time made available, making bounded scope and explicit completion criteria useful planning constraints.

An experience curve emphasizes its highest point and final point over the many ordinary moments between them.

Behavior

Peak-End Rule

Retrospective evaluation of an experience can be disproportionately influenced by its most intense moment and its ending rather than its full duration.

A nearly completed loop remains open at one active gap while a completed loop rests beside it.

Behavior

Zeigarnik Effect

Interrupted goals may remain mentally active and prompt resumption, but unfinished tasks do not show a reliable universal memory advantage.

Explore another category

InteractionHuman factors, motor control, and human computer interaction GestaltGestalt psychology and perceptual organization PerceptionVisual perception, psychophysics, and information visualization AttentionCognitive psychology and attention research MemoryMemory science, learning science, and cognitive psychology Cognitive loadCognitive load theory, problem solving, and interface complexity