Human factors in design emphasizes understanding the user's capabilities and limitations to create products and systems that are easy to use, efficient, and safe.

Human-computer interaction (HCI) is the field of study that focuses on the interaction between humans and computers, including the design and evaluation of user interfaces.

Cognitive biases are mental shortcuts that can lead to errors in judgment. They can influence design decisions by causing designers to favor certain solutions over others, even when there is evidence to suggest that these solutions are not optimal.

User personas are fictional characters that represent a specific user group and their needs. They are used in human factors design to help designers understand the users' perspectives and to make design decisions that are tailored to their needs.

Heuristics are simple rules of thumb that can be used to make design decisions. The power law of practice, the law of diminishing returns, and Fitts's law are all examples of heuristics that are commonly used in human factors design.

Usability testing, user experience testing, and human factors evaluation are all terms used to describe the process of evaluating the usability of a product or system. These evaluations typically involve observing users as they interact with the product or system and collecting data on their performance and satisfaction.

Surveys, interviews, and focus groups are all common methods for gathering user feedback in human factors design. These methods can be used to collect data on users' needs, preferences, and experiences with a product or system.

User-centered design, human-centered design, and ergonomic design are all terms used to describe the process of designing products and systems that are easy to use and efficient. These approaches focus on understanding the user's needs and preferences and designing products and systems that are tailored to those needs.

Consistency, affordance, and feedback are all common design principles used in human factors design. Consistency refers to the use of similar design elements across a product or system. Affordance refers to the design of objects in a way that suggests how they should be used. Feedback refers to the provision of information to users about the results of their actions.

Cognitive psychology, perception psychology, and attention psychology are all fields of study that focus on how people perceive and process information. These fields of study are relevant to human factors design because they can help designers understand how users will interact with products and systems.

A/B testing, multivariate testing, and user testing are all common methods for evaluating the effectiveness of a human factors design. These methods can be used to compare different design alternatives and to identify the design that is most effective in meeting the user's needs.

Safety engineering, human factors engineering, and ergonomics are all fields of study that focus on the design of products and systems that are safe for users. These fields of study can help designers identify and mitigate potential hazards and to create products and systems that are safe to use.

Hazard analysis, risk assessment, and failure mode and effects analysis (FMEA) are all common methods for identifying potential hazards in a human factors design. These methods can be used to identify potential hazards, to assess the likelihood and severity of these hazards, and to develop strategies for mitigating these hazards.

Environmental psychology, human factors psychology, and ergonomics are all fields of study that focus on how people interact with their physical environment. These fields of study can help designers understand how users will interact with products and systems in different environments and to design products and systems that are compatible with the user's environment.

Contextual inquiry, ethnographic observation, and field study are all common methods for evaluating the usability of a product or system in a specific environment. These methods can be used to observe users as they interact with the product or system in their natural environment and to collect data on their performance and satisfaction.