Scientific Research for Designers: How Perception Rules Work

Contents:

• The Phi Phenomenon and Other Discoveries of Wertheimer
• Other Rules of Perception
• The Figure-Ground Rule
• The Study of Perception: Other Versions

Why does the brain perceive some combinations as beautiful and correct, while others are not? How do we combine initially unrelated information? These questions rarely occur to us until we begin to analyze our preferences. Perception is influenced by both cultural and personal factors, making this process complex and multifaceted. Understanding the mechanisms behind our assessments can help us gain a deeper understanding of how our preferences are formed and how they influence our behavior in everyday life.

In some industries, it is important to consider the patterns of perception. Effective design must rely on the characteristics of human perception to achieve its goals.

Understanding the principles of perception is useful for professionals in helping professions, such as teachers, doctors, and psychologists. These laws of perception, formulated by Gestalt psychotherapist Max Wertheimer, help us better understand how people perceive information and interact with the world around us. Understanding these principles can significantly improve the quality of work of professionals, facilitating more effective communications and interactions with clients and students.

The Phi Phenomenon and Other Wertheimer Discoveries

Gestalt psychology played a key role in the study of perception and the formation of a holistic image. The term "Gestalt" is translated from German as "form" or "image". The basic principle of Gestalt psychology is that the sum of the parts does not always equal the whole, which allows a person to recognize and integrate various aspects of their "self". Wertheimer's interest in how we combine disparate objects into a single whole arose long before the emergence of Gestalt psychology as an independent direction and therapeutic method. This discovery laid the foundation for further study of human perception and interaction with the surrounding world.

In 1912, the scientist published a paper titled "Experimental Studies in the Perception of Motion." In this work, he convincingly demonstrated that people perceive rapidly flickering, but stationary images as moving. This discovery was an important contribution to the study of perception and psychology, opening new horizons for understanding how the human brain processes visual information. Research into motion perception continues to be relevant in modern scientific discussions, emphasizing the importance of visual stimuli in our daily lives.

According to one legend, the discovery occurred when the scientist was examining a children's toy similar to a kaleidoscope. According to another version, inspiration came to him at a railroad crossing while observing flashing signal lights. A more official interpretation claims that this was the result of deliberate experimentation with a tachistoscope.

Wertheimer, using apertures positioned at different angles, alternately projected two lines onto a black background and studied how subjects perceived these identical stripes of light. Although both lines remained stationary, the tilted line was more often perceived as moving. This observation highlights the peculiarities of visual perception and illustrates how the angle of inclination can influence visual perception.

The psychologist concluded that movement as a whole is not equivalent to its static parts, for example, two stationary stripes. This observation allows us to formulate an important rule of perception—the rule of integrity. The human brain constantly strives to create a complete picture based on even the most limited data. This principle explains why we are able to perceive and interpret information, even if it is incomplete or fragmented. The principle of continuity plays a key role in our perception of the world around us and helps explain how we interpret visual and other stimuli. We can observe a "path" in adjacent circles of light and recognize familiar shapes in disjointed lines. This feature is known as the phi phenomenon. Wertheimer, when describing his discovery, used the Greek letter φ, which is likely a reference to the golden ratio and Fibonacci numbers. The phi phenomenon illustrates how our brain perceives and interprets visual stimuli, creating the illusion of continuous movement and continuity, even when information is presented in disjointed fragments. This discovery is of great importance in the psychology of perception and art, as it helps us understand how we perceive the world around us.

Wertheimer identified the beta phenomenon (β-movement), which, despite its connection with issues of visual perception, has not gained widespread popularity in popular culture. This phenomenon illustrates how the human brain interprets moving images, which highlights the importance of understanding perception in different media formats. Research into the beta phenomenon can be useful for designers and content creators seeking to improve visual effects and audience interaction.

Holistic perception promotes the development of imagination, abstract thinking, and irony. It allows a person to significantly reduce the expenditure of energy and attention on information processing. In German-based Gestalt psychology, this phenomenon is referred to as the law of pregnancy or the law of pregnanz. This term derives from the German word prägnanz, which translates as conciseness, brevity, and simplicity, implying a clear and understandable form. The term has been the subject of an interesting misunderstanding. According to Wolfgang Pfeiffer's etymological dictionary, the word "pregnanz" combines the meanings of the German verb prägen, "to form, to complete," and the Latin adjective praegnans, "completed, filled," and "pregnant" (hence the modern English word "pregnant"). This word demonstrates how linguistic roots can intersect and influence each other, creating multifaceted meanings.

Unfortunately, the scientist did not live to see the technological boom, the end of the war, and the publication of his major work. Nevertheless, Wertheimer's ideas were taken up by his students and colleagues, among whom Wolfgang Köhler and Kurt Koffka stand out. They actively participated in the first experiments, which laid the foundation for further research and the development of his concepts.

Perception rules based on pure science have found application in website and app design. In UX design, the Pregnanz principle plays a key role, promoting the creation of intuitive interfaces. This principle helps users more easily perceive information and interact with design elements, which in turn improves the overall user experience. An intuitive interface is becoming an important element, increasing the convenience and efficiency of working with digital products.

Circular icons on the screen, grouped by meaning and frequency of use, buttons and windows with arrows directing users to the desired goal, create a convenient interface for shopping on marketplaces. These design elements make the shopping process accessible even to three-year-olds, but they remain challenging for older users, like our grandmothers, who may have difficulty purchasing train tickets online. The basis for such solutions were the discoveries of the famous psychologist Vergelmer, who studied the perception of interfaces and the influence of design on user behavior.

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Design Psychology: Five Key Laws

Design psychology plays an important role in creating effective and Attractive visual solutions. Understanding the basic principles allows designers to develop products that not only attract attention but also promote usability. In this article, we will consider five basic laws of design psychology that will help improve user interaction.

The first law is the law of perception. People perceive information not only through visual images, but also through associations and emotions. Designers must consider how colors, shapes, and composition affect users' emotional responses to create a positive impression.

The second law is the law of proximity. Elements located near each other are perceived as related. Using this principle, you can create logical groups and improve interface navigation.

The third law is the law of symmetry. The human brain prefers symmetrical and balanced objects. Designers should strive for harmony in composition to make the interface more attractive and easier to perceive.

The fourth law is the law of contrast. Strong contrasts help highlight important elements and information, which facilitates perception. Using contrast in colors and shapes helps direct the user's attention to key aspects of the design.

The fifth law is the law of uniformity. Consistency in style, fonts, and colors creates a sense of integrity and professionalism. This promotes brand recall and makes the interface easier to use.

Understanding these laws of design psychology will help you create more effective and attractive visual solutions that will contribute to a positive user experience. Use these principles in your work to improve the quality of your designs and customer satisfaction.

Other Rules of Perception

Pregnanz's law covers many aspects, and about ten additional rules of perception have been formulated based on it. Some of these rules are considered derivatives of Pregnanz's law and are often referred to as effects or factors. In other cases, they are distinguished as separate, independent rules, which emphasizes their importance in the field of perception and psychology. Understanding these aspects is important for a deep analysis of the interaction of elements and their impact on perception.

However, this list is not final and may be updated or changed.

The human psyche plays a key role in learning new skills. This theme has inspired iconoclastic artists throughout history. In design, as well as in its more traditional forms, such as typography and architecture, these principles are fully evident. Intuitively, we tend to group similar objects, prefer rounded shapes, and create chains and sequences. We value symmetry and strive for complete, harmoniously organized spaces. These aspects not only influence the perception of visual information but also become the basis for creating aesthetically pleasing and functional designs.

Learning new directions in your field can significantly increase your competitiveness. It is important to constantly update your knowledge and skills to stay relevant in the labor market. Modern technologies and working methods are rapidly evolving, and those who do not keep up with these changes risk being left behind. Maintain an interest in learning and self-development to not only meet but also stay ahead of the curve. Regular courses, seminars, and webinars will help you expand your horizons and incorporate new ideas into your work. This will not only increase your professional value but also open up new career opportunities.

Gestalt Principles in UX Design. Part 1

Gestalt principles play an important role in creating a usable and intuitive user experience (UX). These principles help designers organize interface elements so that users can easily perceive information and navigate a website or application.

The main Gestalt principles include the Law of Proximity, the Law of Similarity, the Law of Closure, and the Law of Common Fate. The Law of Proximity suggests that elements located close to each other are perceived as related. The Law of Similarity indicates that similar elements are perceived as a group, even if they are located far from each other. The Law of Closure implies that missing parts of a form are perceived as complete. The law of common fate states that elements moving in the same direction are perceived as a whole.

Applying these principles to UX design allows for the creation of more effective and understandable interfaces. Designers who incorporate Gestalt principles can improve user interactions with products, increasing their satisfaction and engagement. Developers striving to create successful interfaces must recognize the importance of these principles and actively use them in their work.

Perceptual rules remain a subject of research in fields such as evidence-based medicine and neuropsychology. The mechanisms that determine how people perceive information are not fully understood. Most likely, individual perception varies from person to person, which sometimes leads to interesting and unexpected situations.

The Figure-Ground Rule

This peculiarity of perception deserves special attention.

When looking at several objects, our brain automatically emphasizes one of them, blurring the others and turning them into the background. This process is called figure-ground perception. We are able to arbitrarily choose what to perceive as "figure" and what as "ground," but often this choice occurs spontaneously. Understanding this perception mechanism can help improve the design and presentation of information, since the correct accentuation of objects allows you to better convey the meaning and draw attention to key elements.

Zooming in photography and video resembles the operation of a lens, effectively directing the viewer's attention. This perception principle is actively used by professional photographers and videographers to create expressive shots. Furthermore, the lack of contrast can serve as a deliberate artistic device, emphasizing certain elements of a composition and creating a unique atmosphere. Using these techniques, you can significantly improve the quality of visual content and make it more appealing to your audience.

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Simple rules for mobile Typography

Mobile typography plays a key role in creating user-friendly and engaging content for smartphone users. The right choice of fonts and sizes, as well as the judicious use of whitespace and color schemes, can significantly improve the readability of the text.

The first thing to consider is the font size. It should be sufficient for comfortable reading on small screens. It is recommended to use fonts of at least 14 pixels. This will ensure easy perception of the text, especially for users with disabilities.

Line spacing is also important. The optimal value should be between 1.5 and 1.8, which prevents lines from sticking together and improves readability. Don't forget about spaces between paragraphs—they help divide the text into logical parts and make it more structured.

Contrast between the background and the text is also of great importance. Choose colors that ensure good visibility and do not strain the eyes. Dark text on a light background, or vice versa, is a classic option that always works.

An equally important aspect is font adaptability. Make sure your content displays correctly on a variety of devices and screens. Use relative units of measurement, such as em or rem, so that the text automatically adjusts to the screen size.

Finally, remember that simplicity is the key to success. Avoid excessive use of different fonts and styles. One or two well-chosen fonts are usually enough to make the text attractive and readable.

By following these simple rules of mobile typography, you can create high-quality content that will be easily perceived on any device.

The law of pregnancy also applies to auditory perception: our auditory system tends to organize sounds, forming simple and coherent structures from them. This means that we perceive sound elements not in isolation, but as parts of a whole, which makes them easier to understand and interpret.

Studying Perception: Other Versions

The American psychologist and philosopher James Jerome Gibson proposed an alternative approach to visual perception, which became known as "ecological perception." In contrast to traditional methods based on average data, Gibson focused on human interaction with the environment. This approach emphasizes that perception is formed not in isolation, but in the context of real-world experience, which makes it more relevant for studying visual perception in natural settings. Ecological perception opens new horizons in understanding how people perceive the world and respond to visual stimuli.

In real life, as the scientist rightly noted, we do not observe point-like light from lamps, as occurs in the experiments of Wertheimer and his colleagues. We have difficulty identifying specific stimuli or still images from the general flow of life. This complexity makes the perception of light and its sources more complex and less straightforward than under controlled experimental conditions. As a result, our visual perception becomes not only a matter of the physics of light but also of psychology, influencing how we interpret the reality around us.

According to Gibson, perception is the process of compiling and interacting with the stimuli around us. The researcher emphasized that we perceive objects holistically, and not simply by individual characteristics such as shape, color, depth, or height. He argued that our perception depends on many factors of which we are not always conscious, and that we act and perceive information intuitively, at a deeper, "primitive" level.

Gibson argued that our perception is a continuous process. We are able to isolate individual invariants from an endless stream of events. This means that we are constantly processing information and identifying key elements that help us navigate the world around us. Perception thus becomes an active process, allowing us to adapt and respond to changes in our environment.

Gibson, together with his wife, renowned researcher Eleanor Gibson, developed an experiment called the "visual cliff." This study involved infants around six months old who were asked to crawl from an oilcloth-covered table over a glass "cliff." The results showed that most of the children experienced fear and stopped in front of the imaginary obstacle. However, some babies were willing to cross the transparent barrier if encouraged by their parents. This experiment was an important step in understanding the development of depth perception and fear in children.

Research shows that even two-month-old infants who cannot crawl show little interest in the edge of a "cliff," even when brought to it. This experiment was an important step in the study of optical depth perception in infants. The results help understand how visual skills and spatial perception develop early in life.

The ideas of the Gibson family were ahead of their time and have become increasingly popular in recent decades. Their concepts and approaches resonate with modern society, indicating a high interest in their legacy and influence on various areas of life.

Gibson emphasized the importance of form and surface in human perception of the environment, which has found application in architecture and urban planning. In his 1979 paper, "An Ecological Approach to Visual Perception," he introduced the concept of "ecological laws of surfaces," which explain how the visual characteristics of objects influence our perception and interaction with them. These ideas remain relevant today, contributing to a deeper understanding of architectural and urban design and their impact on human behavior.

• All elastic materials have a surface, and all surfaces have visual attributes.
• Every surface has a level of resistance to deformation, which depends on the degree of viscosity of the material.
• Every surface has a level of resistance to disintegration, which depends on the degree of cohesion of the material.
• Every surface has a texture, the character of which depends on the composition of the material.
• Every surface has a shape, the character of which depends on the structure.
• A surface has a property of reflecting light, which depends on the material.

Gibson argued that we intuitively perceive the texture and functionality of various surfaces based on our previous experiences, gained from interactions with others or through personal empirical observations. For example, we recognize that any flat, dry, and smooth surface provides a comfortable place to sit. At the same time, Gibson emphasized that the process of perception depends not so much on external stimuli, but on the conscious processing of information received during perception.

The capacity for organic and holistic cognition, championed by James Gibson, found important application in ergonomic design. The idea that furniture and interiors should be proportionate and not interfere with each other during use was revolutionary for its time. An example is the common problem of refrigerator and cabinet doors clashing in the kitchen. According to this concept, furniture is designed with safety, convenience, and harmony in mind, as well as meeting the functional needs of its users. It is important to remember that a home is designed for people, and not the other way around, which emphasizes the importance of ergonomic design in creating a comfortable and efficient living environment.

Reading is an important aspect of personal and professional development. It helps broaden horizons, improve critical thinking skills, and enhance literacy. Books, articles, and research provide valuable information that can be applied to various areas of life. Through reading, we can delve into new topics, explore other people's stories, and gain inspiration for our own ideas. A good book or article can change your perspective and open new horizons. Don't miss the opportunity to enrich your knowledge and improve your quality of life through reading.

Braun: A Symbol of German Minimalism

The Braun brand embodies German minimalism, combining functionality and elegant design. Since its founding, the company has created numerous innovative products that have become benchmarks for quality and style. Simplicity of form and attention to detail make Braun devices not only easy to use but also visually appealing. Each product is designed with a focus on practicality and durability, reflecting the high standards of German manufacturing. Braun continues to set standards in the world of design and technology, remaining true to the principles of minimalism and aesthetics. The laws and rules of perception are not absolute truths, and there are no penalties for violating them. However, it is important to remember that life is too short and full of sad moments to waste it on unsightly images, unclear slides, unfinished forms, poorly assembled furniture, and asymmetrical seams in wallpaper. Striving for harmony and quality in visual perception can significantly improve our experience, so it is worth paying attention to detail and creating a space that will inspire and delight. The brain helps us distinguish between beauty and ugliness. If millions of years of evolution have not changed our preferences, then this is essential for our perception of the world. Understanding aesthetic values ​​plays a key role in our lives and influences our emotional state. Beauty affects our environment, interactions, and even our health. It's important to recognize that our preferences have been shaped over time, and they can serve as a guide in choosing objects and phenomena that bring us joy and inspiration.

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• Gestalt Principles in UX. Part 1
• Gestalt Principles in UX. Part 2
• Banner blindness: how it works and what to consider
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