Cognitive Load Theory refers to a cognitive framework that explains how learners process information during learning, and the limitations of working memory’s capacity to absorb educational content. This theory was developed by cognitive psychologistJohn Sweller, aiming to improve instructional design in accordance with the functioning of the human mind.
The theory is based on the fundamental idea that effective learning occurs when content is presented in a way that reduces unnecessary mental effort, and supports knowledge construction in long-term memory. Therefore, Cognitive Load Theory is one of the most important scientific foundations in curriculum design, lesson preparation, and building digital educational materials.
What Is Meant by Cognitive Load?
Cognitive Load is the amount of mental effort that learners expend while processing new information in working memory. This load increases when content is complex or disorganized, or when it is presented in a way that doesn’t consider the learner’s cognitive abilities.
The concept of Cognitive Load focuses on the relationship between the amount of information presented and the limited capacity of working memory, as exceeding this capacity leads to poor understanding and difficulty in learning.
Cognitive Load Definition
Cognitive Load can be defined as the mental pressure resulting from information processing during learning, and includes everything that consumes working memory resources such as thinking, concentration, and connecting concepts. This concept is fundamental to understanding the reasons for learning difficulties in many educational situations.
Cognitive Load is not negative in itself, but becomes a problem when it exceeds the limit that working memory can effectively handle.
Working Memory and Long-term Memory
emphasizestheoryCognitive Load that working memory has limited capacity and duration, while long-term memory has nearly unlimited capacity for storing knowledge. Real learning occurs when information is transferred from working memory to long-term memory in the form of cognitive schemas (Schemas).
The task of effective instruction is to facilitate this process, by organizing content and reducing distractions, so that working memory resources are used for understanding rather than dealing with unnecessary complexity.
Who Is John Sweller?
John Sweller is an Australian educational psychologist considered one of the pioneers of applied cognitive psychology, and is famous for his contributions to instructional design and cognitive learning theories. He developed Cognitive Load Theory in the 1980s based on experimental research on problem-solving and learning.
Sweller focused his work on understanding how learners process information, and showed that many traditional teaching methods place excessive cognitive load on learners that hinders rather than supports learning. His research contributed to a transformation in educational materials design, especially in school, university, and e-learning.












