Glossary
Information Processing
What is information processing?
In cognitive psychology, information processing is an approach to explaining how people transform, use and retain information. It includes perception, attention, memory and decision processes. It is a broad framework with multiple models, not one fixed sequence that every thought follows.
Key elements of information processing
Sensation supplies information about stimulation; perception concerns how it is interpreted. Attention affects which information receives priority. Memory allows information to be retained and used beyond the immediate moment. These processes interact, rather than passing every experience through a single rigid assembly line.
Encoding concerns forming a representation from experience; storage concerns retention over time; retrieval concerns making retained information available for use. These are useful functional distinctions. The computer analogy helps describe operations but does not mean the brain works like a conventional computer.
Models and limits
For example, the Atkinson–Shiffrin model distinguishes sensory, short-term and long-term memory, while working-memory models describe active maintenance and processing. Cognitive operations can interact, and earlier knowledge can influence current perception. A diagram of stages is a simplification, not a complete account of the nervous system.
Applications in education and interface design
A lesson might keep an example visible while students work through a new procedure. An interface might show a running summary so users do not have to remember choices made several screens earlier. Both are ways to investigate memory demands. The useful question is which operation the task asks of the person and where difficulty occurs.
The framework can guide that investigation, but it does not establish that a particular teaching method, interface or therapy works. The computer analogy is a tool for thinking, not a complete explanation of human cognition.