Elements that move in the same direction are perceived to be more related than elements that move in different directions or are stationary.

Perceptual organization of movement. In perception: Gestalt principles. One Gestalt principle, that of common fate, depends on movement and is quite striking when observed. According to the principle of common fate, Humans perceive visual elements that move in the same speed and/or direction as parts of a single stimulus.

A common example of this is a flock of birds. When several birds fly in the same direction, we normally assume that they belong to a single group. Birds that fly in a different direction do not appear to be included in the said group. A marching band is another example that usually exhibits the gestalt law of common fate.

Consider common fate as a grouping strategy when displaying information with moving or flickering elements. Related elements should move at the same time, velocity, and direction, or flicker at the same time, frequency, and intensity. It is possible to group elements when these variables are dissimilar, but only if the motion or flicker forms a recognizable pattern. When moving elements within bounded regions, move the edges of the region in the same direction as the elements to achieve a figure relationship or in the opposite direction as the elements to achieve a ground relationship.

References

More Readings,

A storyboard is a graphic organizer in the form of illustrations or images displayed in sequence for the purpose of pre-visualizing a motion picture, animation, motion graphic, user interactions,  or interactive media sequence. A visual nar...

The visible clustering of observations and insights into meaningful categories and relationships • Designers capture research insights, observations, concerns, or requirements on individual sticky notes. • Rather than grouping notes into predef...

A framework for structuring field observations This can be used to guide any ethnographic or observational method, corresponding to five interrelated elements: Activities are goal-directed sets of actions or the pathways that people take towa...

Reporting and analyzing user queries submitted as search criteria on a site Analyzing words and phrases entered into a search provides insight into what people are looking for in order to evaluate how well content meets those needs. Site Se...

The Kano model is a theory for product development and customer satisfaction developed in the 1980s by Professor Noriaki Kano, which classifies customer preferences into five categories. Helps determine and prioritize which product att...

Diary studies are a form of longitudinal research(research that takes place over a long period of time with the same participants). Typically, users self-report their activities at regular intervals to create a log of their activities, thoughts, and ...