Human Computer Interaction - brief intro

Cognition in human-computer interaction includes the mental processes occurring between humans and computers. This encompasses perceiving inputs from the computer, processing them in the brain, and producing outputs like physical actions, speech, and facial expressions.
The video above looks at cognition as a continuous input-output loop that goes from action, through to perception (input through our senses), to cognition (mental processing), back to action (the output). Although one might perceive this process as starting with perception, it is vital to remember that perceptions often trigger actions, but at their core, humans and animals focus on performing activities in the world. This understanding is crucial for the design of effective digital interactions.
Design in human-computer interaction, as discussed in the video, is about achieving goals within constraints. It involves understanding the purpose or goal, like enjoyment or work efficiency, and navigating the constraints, such as medium, platform, time, and money, to achieve that purpose.
It is essential to understand the materials, both digital and human, and to make trade-offs between different goals and constraints. Ultimately, the central message is that the user is at the heart of what you do as a designer. Understanding the users and the technology you work with is crucial for successful design.
Ergonomics in Human-Computer Interaction (HCI) refers to the design and implementation of interfaces that ensure user comfort, efficiency, and effectiveness. In this video, HCI expert Prof Alan Dix discusses touch and haptics in user interfaces, highlighting the importance of ergonomics in device design.
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For example, mobile phones and cars use haptic feedback to provide users with intuitive and engaging experiences. However, poorly implemented haptic feedback can confuse users. This underscores the importance of ergonomics in HCI to ensure that interfaces are user-friendly, intuitive, and do not cause strain or discomfort, ultimately enhancing the user's overall experience with a device or application.
Human-Computer Interaction (HCI) is crucial due to its direct impact on the user experience.
As highlighted in the video, the shift towards service orientation, prompted by the internet and digital goods, has made usability and user experience increasingly important. Users now have multiple choice points and can easily swap services if they are not satisfied, which underscores the criticality of user experience. Prof Alan Dix uses the analogy of Maslow’s hierarchy of needs in the context of user interfaces, stating that once the basic needs of functionality and usability are addressed, user experience becomes the key differentiator.
User experience is the factor that will make someone choose your product over another. Therefore, optimizing the HCI is paramount to ensure the success and competitiveness of a product or service.
HCI does not require any knowledge of coding. While coding can be a part of the design process and implementation, it is not necessary for understanding and applying the principles of human-computer interaction.
The first computer, as we know it today, was invented in the 1950s. At that time, computers were room-sized and cost millions of dollars or pounds or euros in current terms. Thomas Watson of IBM famously mispredicted that five computers would be enough forever, reflecting the sentiment of the time. Over the decades, the cost and size of computers have drastically reduced, making them accessible to the general public. By the mid-70s, the first personal computers were coming through, and today, the total number of computers and smartphones exceeds the number of people in the world.
For a detailed evolution of computer technology, watch the video below:
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If you are looking to study Human-Computer Interaction (HCI), the Interaction Design Foundation (IxDF) is the most authoritative online learning platform. IxDF offers three comprehensive online HCI courses:
HCI: Foundations of UX Design: This course provides a solid foundation in HCI principles and how they apply to UX design.
HCI: Design for Thought and Emotion: Unlock the secrets of the human mind and learn how to apply these insights to your work.
HCI: Perception and Memory: Learn about the role of perception and memory in HCI and how to design interfaces that align with human cognitive capabilities.
Enroll in these courses to enhance your HCI knowledge and skills from the comfort of your home.
Here’s the entire UX literature on Human-Computer Interaction (HCI) by the Interaction Design Foundation, collated in one place: