Human Memory — Psychology STD 11 Humanities — Question

Depending upon how much time people take in responding to questions, the nature of organization in long-term memory, has been inferred.The most important unit of representation of knowledge in long-term memory is a concept. Concepts are mental categories for objects and events, which are similar to each other in one or in more than one way. Concepts may also get organized in schemas which are mental frameworks which represent our knowledge and assumptions about the world.
In the year 1969, Allann Collins and Ross Quillian suggested that knowledge in long-term memory is organized hierarchically and assumes a network structure. Elements of this structure are called nodes. Nodes are concepts while connections between nodes are labeled relationships, which indicate category membership or concept attributes.