3. User Experience Laws and Fundamentals
UX Research: Understanding the User’s World
Imagine you see someone passing by wearing a great pair of jeans that you think would look perfect on you, too. Naturally, you might compliment them and ask, "Where’d you get those?" They might share details on the fit, comfort, and care instructions, which help you gauge if it’s a good purchase. You get home and search online for those jeans, only to find that your size is sold out. Not losing hope, you continue hunting on other sites and stumble upon a similar pair, available in your size. Now, questions arise: Will it look the same in person? Will it fit the way you want? To make a decision, you pore over product reviews, learning how others describe the fit, color, texture, durability, and overall satisfaction.
By now, you feel pretty confident and click “Add to Cart.” After the jeans arrive, you’re thrilled with how they match the rest of your wardrobe, so much so that you’re tempted to leave your own review, helping future shoppers like yourself.
This is a relatable example of UX Research: the process of gathering data to understand the user’s experience. UX research can involve primary research (data you gather yourself) or secondary research (data collected by others). The information you collect might fall into two categories:
- Qualitative: Describing subjective aspects like feelings, textures, and colors.
- Quantitative: Numerical data like ratings, price, and size, which help in measurable assessments.
In addition to interviews and surveys, UX research might include specialized methods like eye-tracking, EEGs, and flow data analysis. Each approach uncovers unique insights, helping you build a more user-centered design.
Understanding Cognitive Load in Design
Cognitive load refers to the mental effort required to process information and complete tasks. In design, it’s essential to manage cognitive load carefully; a well-balanced design keeps users engaged without overwhelming them. When users are faced with a high cognitive load, such as navigating a complicated form or website, they may feel frustrated or fatigued, leading to task abandonment and a poor overall experience.
There are three main types of cognitive load:
- Intrinsic Load: The natural difficulty of a task.
- Extraneous Load: Additional complexity due to poor design choices.
- Germane Load: The effort to build mental models that aid understanding and learning.
In UX, reducing extraneous load while balancing intrinsic and germane loads makes for a smoother, more intuitive experience. The secret to a seamless user experience lies in managing cognitive load effectively.
Core Laws of UX
In UX, a solid understanding of human behavior has led to the formulation of “laws”—principles that guide designers in creating intuitive, satisfying experiences. Let’s explore some of the foundational laws of UX, with relatable examples to help you understand their real-world applications.
1. Hick’s Law
- The more choices available, the longer it takes to decide.
- Imagine a small coffee shop with three options: black coffee, cappuccino, and latte. You quickly decide and place your order. Now, picture a larger café with twenty coffee options—Espresso, Mocha, Cortado, and more. With too many choices, decision-making becomes overwhelming and mentally taxing. Hick’s Law reminds us that in design, simplifying options can help users make faster, more confident decisions.
2. Fitts’s Law
- The time to interact with an object depends on its size and proximity.
- Picture a barista preparing drinks. If the grinder is right next to the espresso machine, it works quickly and efficiently. But if it’s far across the counter, each drink takes longer to make. Fitts’s Law tells us that the placement and size of interactive elements (like buttons) are essential; bringing them closer and making them larger can improve usability.
3. Jakob’s Law
- Users expect consistency with other sites they use.
- Imagine being accustomed to ordering coffee with the menu above the counter, and paying at the end. A new café with a different order flow might feel jarring and confusing. Jakob’s Law advises designers to use familiar patterns so users can navigate your site without re-learning how things work.
4. Miller’s Law
- People can hold about 7 (±2) items in their working memory.
- If a barista lists seven ingredients for a complex coffee drink, you might remember the first few but struggle with the rest. Miller’s Law suggests chunking information for easier processing. In design, breaking down content into digestible groups helps users retain and understand information.
Chunking: A Design Essential
Chunking breaks down information into manageable parts, enhancing memory retention and reducing cognitive load. For example, phone numbers are chunked into smaller groups (555-123-4567) to make them easier to remember. In design, chunking helps users process complex information without feeling overwhelmed.
5. Peak-End Rule
- People judge an experience based on its peak moment and ending.
- Think of a visit to a coffee shop. While you may not recall every detail, you likely remember the high points (like your favorite sip) and how the experience ended (a friendly goodbye). The Peak-End Rule encourages designers to create memorable moments and ensure a positive end experience, leaving a favorable impression.
6. Serial Position Effect
- People remember the first and last items in a sequence better than those in the middle.
- If you’re given a list of coffee shop recommendations, you’re likely to remember the first and last few shops mentioned. This effect suggests that key information should be positioned at the beginning or end, where it’s more likely to be retained.
Each of these UX laws can help you create intuitive, enjoyable designs by aligning with natural human behavior patterns. Keep these principles in mind as you build your designs—they’ll serve as a roadmap for crafting experiences that feel natural, engaging, and satisfying for users.
As we continue this journey, remember that great design is not just about aesthetics. It’s about making life easier, more enjoyable, and more connected for every user you serve. So, let’s dive deeper into UX principles and unlock the potential for transformative design.