Cognitive Load Theory Sweller, van Merrienboer, and Paas, 1998 Psych 605 Fall 2009.

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Presentation transcript:

Cognitive Load Theory Sweller, van Merrienboer, and Paas, 1998 Psych 605 Fall 2009

What is Cognitive Load Theory? Long Term Store Monitoring occurs in working memory. Monitoring occurs in working memory. Processing occurs in working memory. Processing occurs in working memory. There is a restricted space: 7 +/- 2 There is a restricted space: 7 +/- 2 CLT is a theory of instruction that addresses directly the limitations of Working Memory Executive Visuospatial Sketchpad Phonological Loop Episodic Buffer Schema Construction Schema Automation In terms of Working Memory Working Memory

What is Cognitive Load Theory Long term memory stores unlimited amounts of information. Long term memory stores unlimited amounts of information. Humans are poor at reasoning skills unless elements, which we reason with, have been previously stored in long term memory. Humans are poor at reasoning skills unless elements, which we reason with, have been previously stored in long term memory. Episodic Buffer Executive Visuospatial Sketchpad Phonological Loop Schema Construction Schema Automation Long Term Memory CLT is designed to provide principles which lead to the construction of new schema stored in Long Term Memory. CLT is designed to provide principles which lead to the construction of new schema stored in Long Term Memory. In terms of Long Term Memory Working Memory

What is Cognitive Load Theory? Knowledge is stored in long term memory in the form of schemas. Knowledge is stored in long term memory in the form of schemas. Skilled performance develops from the combination of elements consisting of lower level schemas into higher level schemas. Skilled performance develops from the combination of elements consisting of lower level schemas into higher level schemas. Schema construction categorizes elements of information. Schema construction categorizes elements of information. Long Term Store Executive Visuospatial Sketchpad Phonological Loop Episodic Buffer Schema Construction Schema Automation Working Memory In Terms of schema construction CLT addresses the reduction of working memory load during the formation of new schema.

What is Cognitive Load Theory Schema automation is a process of schema construction. Schema automation is a process of schema construction. Schema automation results from practice. Schema automation results from practice. Minimal conscious effort is needed. Minimal conscious effort is needed. Familiar tasks are performed accurately and fluidly. Familiar tasks are performed accurately and fluidly. Long Term Store Schema Construction Schema Automation Working Memory Executive Visuospatial Sketchpad Phonological Loop Episodic Buffer In terms of schematic automation CLT addresses the importance of schema automation during schema construction. CLT addresses the importance of schema automation during schema construction.

Main Goals of Cognitive Load Theory and Instruction Cognitive Load Theory Instruction To provide guidelines in presentation of information presentation of information To encourage learner activities to optimize intellectual performance To reduce working memory load To encourage schema construction To construct and automate schemas To facilitate the information that is processed in working memory To manipulate information in working memory prior to long term storage

CLT Identifies 3 Types of Cognitive Load 1. Intrinsic Cognitive Load 1. Intrinsic Cognitive Load

Intrinsic Cognitive Load Intrinsic Cognitive Load are characteristics of materials themselves. Intrinsic Cognitive Load are characteristics of materials themselves. Intrinsic Cognitive Load is created in any content being learned in working memory. Intrinsic Cognitive Load is created in any content being learned in working memory. Intrinsic Cognitive Load cannot be altered. Intrinsic Cognitive Load cannot be altered. Intrinsic Cognitive Load contains low/high element interactivity. Intrinsic Cognitive Load contains low/high element interactivity. Materials Themselves Learned in Working Memory Cannot be Altered Low/High Elements

Intrinsic Cognitive Load Intrinsic Cognitive Load are characteristics of materials themselves. Intrinsic Cognitive Load are characteristics of materials themselves. Materials Themselves Example: numbers in a math problem 3 ( 5 + 9) = 42

Intrinsic Cognitive Load Intrinsic Cognitive Load occurs in working memory with any content being learned. Intrinsic Cognitive Load occurs in working memory with any content being learned. Learned in Working Memory Long Term Store Schema Construction Schema Automation Phonological Loop Visuospatial Sketchpad Episodic Buffer Executive Working Memory The concept of Intrinsic Cognitive Load The concept of Intrinsic Cognitive Load

Intrinsic Cognitive Load Intrinsic Cognitive Load cannot be altered. Intrinsic Cognitive Load cannot be altered. Cannot be Altered Example: Sentences in a paragraph. The use of physical guidance raises a potential ethical issue. Suppose that, in a program for persons with developmental disabilities, a teacher decides to use physical guidance. Suppose further that an individual client resists being guided. Physical guidance in that instance would therefore be viewed as somewhat intrusive or restrictive. However, as indicated in the discussion of ethical guidelines in Chapter 30, it is generally agreed that behavior modifiers should use the least intrusive and restrictive interventions possible. (Behavior Modification: What it is and How to do it, p.123)

Intrinsic Cognitive Load Intrinsic Cognitive Load contain low/high element interactivity. Intrinsic Cognitive Load contain low/high element interactivity. Low/High Elements Example of a low element interactivity: When learning a new language, the vocabulary words have a low element interactivity. Example of a high element interactivity: When learning a new language, correctly placing words together to create a sentence have a high element interactivity. Mesa: Table Café: Brown Grande: Big La/El: The Es: Is La mesa grande es café. The big table is brown.

Element Interactivity Low Element Interactivity… has a low Working Memory load. has a low Working Memory load. are easy to understand. are easy to understand. elements are learned serially. elements are learned serially. are non-interacting. are non-interacting. High Element Interactivity… has a high Working Memory load. are harder to understand. elements are learned simultaneously. do interact.

Example: Solve for a a/b = c a = bc Is this a low element interactivity or a high element interactivity? Did you solve it quickly?

If Fast… If Slow… The elements do not need to be considered individually within WM. The multiple elements can act as a single element. The schema imposes minimal WM demands, especially if it’s automated. The schema can be used as elements in higher order schemas once they are constructed. The elements need to be considered individually within WM. The Working Memory load is full. Schema has not yet been constructed.

When Schemas are Constructed and Automated Solve for a a/b = c Our working memory has more space to find a solution to a more difficult problem with higher order schema. a = b (c - 5x) + 5x 10x +

Intrinsic Cognitive Load Intrinsic Cognitive Load cannot be altered due to the nature of the material. However, it needs to be considered in instructional design so that knowledge can be communicated at the right grain size. Intrinsic Cognitive Load cannot be altered due to the nature of the material. However, it needs to be considered in instructional design so that knowledge can be communicated at the right grain size.

CLT Identifies 3 Types of Cognitive Load 1. Intrinsic Cognitive Load 1. Intrinsic Cognitive Load 2. Extraneous Cognitive Load 2. Extraneous Cognitive Load

Extraneous Cognitive Load… is unnecessary cognitive load. is unnecessary cognitive load. is not relevant for learning. is not relevant for learning. is seen in poorly designed instructional designs. is seen in poorly designed instructional designs. can be altered with instructional intervention. can be altered with instructional intervention. plus intrinsic cognitive load can exceed working memory, if they are both high. plus intrinsic cognitive load can exceed working memory, if they are both high.

Examples of Extraneous Cognitive Load Multiple sources of information Unnecessary, comprehensive format Extra sounds Long complex explanations

Extraneous Cognitive Load Extraneous Cognitive Load can and should be altered. Unnecessary information within the text or format of the instructional design may cause an overload in the working memory and will negatively affect the learners storage of information. Extraneous Cognitive Load can and should be altered. Unnecessary information within the text or format of the instructional design may cause an overload in the working memory and will negatively affect the learners storage of information.

CLT Identifies 3 Types of Cognitive Load 1. Intrinsic Cognitive Load 1. Intrinsic Cognitive Load 2. Extraneous Cognitive Load 2. Extraneous Cognitive Load 3. Germane Cognitive Load 3. Germane Cognitive Load

Germane Cognitive Load… increases cognitive load. increases cognitive load. is directly relevant to schema construction. is directly relevant to schema construction. contributes to learning. contributes to learning. plus intrinsic and extraneous cognitive loads should stay within WM limits. plus intrinsic and extraneous cognitive loads should stay within WM limits.

Example of Germane Cognitive Load What makes research good? T. D. Cook and Campbell (1979) present four criteria for evaluating how well behavioral science research is carried out- the validity of the research. Construct validity deals with the adequacy of operational definitions: Did the procedures used to concretely represent the hypothetical constructs studied in the research correctly represent those constructs?... (Principles of Research in Behavioral Science, p. 23) Definitions Construct Validity: The adequacy of operational definitions to represent the hypothetical constructs of interest. Highlighted words or definition tables in a textbook are extra information that shows which words are essential to know.

Example of Germane Cognitive Load Cognitive Load Theory Intrinsic Cognitive Load Extraneous Cognitive Load Germane Cognitive Load Diagrams or organizational charts may be used when it is directly relevant to the instructional goal or to create schemas.

Germane Cognitive Load Germane Cognitive Load, like Extraneous Cognitive Load, is extra information that can be altered. However, Germane Cognitive Load should be used for necessary schematic construction. Germane Cognitive Load, like Extraneous Cognitive Load, is extra information that can be altered. However, Germane Cognitive Load should be used for necessary schematic construction.

Summary Understanding the three elements of Cognitive Load Theory; Intrinsic, Extraneous, and Germane, can be used to put together a more effective instructional design. An effective instructional design will directly address the limitations of working memory by the reduction of unnecessary Extraneous Cognitive Load and with the manipulation of information in Germane Cognitive Load, while taking consideration of Intrinsic Cognitive Load. Well prepared instructional designs will facilitate knowledge storage of schemas in Long Term Memory. Understanding the three elements of Cognitive Load Theory; Intrinsic, Extraneous, and Germane, can be used to put together a more effective instructional design. An effective instructional design will directly address the limitations of working memory by the reduction of unnecessary Extraneous Cognitive Load and with the manipulation of information in Germane Cognitive Load, while taking consideration of Intrinsic Cognitive Load. Well prepared instructional designs will facilitate knowledge storage of schemas in Long Term Memory.