Human Computer Interaction Questions
Cognitive load in HCI refers to the amount of mental effort or cognitive resources required by a user to complete a task or interact with a computer system. It is based on the understanding that humans have limited cognitive capacity and can only process a certain amount of information at a time.
There are three types of cognitive load: intrinsic, extraneous, and germane. Intrinsic cognitive load is the inherent complexity of the task itself and cannot be reduced. Extraneous cognitive load refers to the unnecessary cognitive effort caused by poor design choices, such as confusing navigation or excessive information. Germane cognitive load is the cognitive effort required to understand and learn new information that is relevant to the task.
To optimize cognitive load in HCI, designers aim to minimize extraneous load by simplifying interfaces, providing clear instructions, and reducing distractions. They also strive to manage intrinsic load by breaking down complex tasks into smaller, more manageable steps. By doing so, designers can enhance the user experience, improve task performance, and reduce mental fatigue.