In a 1922, Thomas Edison declared that books would become obsolete in
schools and that scholars would be taught through the use of motion pictures. (Cuban,
1986) While Edison’s assertion has not come to fruition in the ensuing hundred
years, advancements in computer technology have allowed educators to combine
effective graphics with the spoken word. This combination of words and images forms
the cornerstone of the Cognitive Theory of Multimedia Learning, which takes a
dual pronged approach into the mind of the learner.
Overview
An offshoot of Cognitivism, Multimedia Learning purports that learners
are more apt to retain information which is presented as words combined with
appropriate pictures. By combining the
two methods of presentation, Multimedia
Learning engages two different receptors for each learner. Each receptor
triggers a separate pathway to the brain thereby doubling the chances of the
learner making connections and filing the information away in long term memory.
Like all cognitive theories of learning, Multimedia theorists believe the brain
processes information much like a computer in that the receptors receive input
and the brain makes various connections and files the information in the
appropriate folder. This folder type
response of the brain is essential because, by categorizing the information
before storage, retrieval then becomes of matter of recalling the category and
extracting the information.
Because of their belief in the brain’s filing system, Multimedia
Learning theorists also believe that complicated information should be broken
down into easily digestible subsets of the whole. This chunking of information allows the learner to absorb a single
factoid and process it before moving on to next piece of the puzzle. Upon completion of the lesson, the learner
mentally synthesizes the individual bits of information to form a working
knowledge of the entire concept. The
multimedia approach is particularly useful for novice learners who have not yet
developed a mental model of the topic being presented. (Mayer & Gallini,
1990) The visual presentation jump starts the modeling process, which allows
the learner to concentrate on the material rather than formulating a series of
files in which to store that material.
Contributors
Since the 1980s, Richard Mayer has been the major proponent of
Multimedia Learning. Working out of the University of California, Mayer has
written numerous papers and conducted a number of studies on Multimedia
Learning Theory. His research and incites are indispensable for an
Instructional Designer in the computer age.
Not content to simply study the generic theories of Multimedia Learning,
Mayer has fine-tuned the topic, developing a number of helpful suggestions for
anyone seeking to provide a multifaceted approach for their learners. Mayer was
also the editor and a contributor to The Cambridge Handbook of Multimedia
Learning. As the world of e-learning continues to grow, the work that Professor
Mayer has done will be turned to with increasing frequency.
Major Principles
In his book Multimedia Learning (Cambridge
Press, 2001), Mayer discusses twelve principles that should govern the design
and organization of multimedia presentations. While these principles are
directed toward educators, anyone who has endured a poorly constructed Power
Point presentation knows that these principles are germane to corporate world
as well. These principles ensure that a learner’s interest is captured and that
their ability to absorb the material is unimpeded by distractions. While all of
the principles are important, only a few will be included and discussed.
The
Coherence Principle
– Learning is more effective when distractions are eliminated from a
presentation. Extraneous movement, unrelated graphics and superfluous sounds
should be avoided.
The
Redundancy Principle
– Written words should be avoided when combined with graphics and narration.
The learner will be distracted by attempting to read the words and thus the
lesson suffers a loss of effectiveness.
The
Temporal
Contiguity Principle – The graphics and the narration should
be timed such that the graphic being displayed corresponds directly to the
narration taking place.
The Segmenting Principle – Multimedia
information should be presented in small chunks rather than a contiguous whole.
The Modality Principle
– Learners are more likely to absorb material which is presented as graphics
and narration rather than as text and animation.
The Personalization Principle – For
effective learning to take place, conversational rather than formal language
and tones should be used in a lesson.
The Voice Principle
– A human, rather than a synthesized, voice should be used when presenting
narration. The human voice is less distracting than a machine voice which
allows learners to concentrate on the material being presented.
Finally, there is the Multimedia Principle, itself, which states that
learners will learn better from a presentation of words and pictures rather
than a presentation of words on their own. It is vital to heed these principles
when developing a multimedia presentation. The goal in any learning environment
should be knowledge transfer and knowledge retention. An effective multimedia
presentation adhering to these principles facilitates this process.
Application
While adhering to the principles of Multimedia Learning Theory seems
fairly straight forward, Instructional Designers and presenters often have
difficulties when constructing a lesson. To be sure, computer software offers
endless graphical options, but the key to any multimedia graphic is less how it
looks and more about what the graphic says. Creating info-graphics is
challenging, but when constructed effectively and combined with informative
narration, the results are positive and encouraging.
When applying multimedia principles, it is important to remember that
less is quite often more. Each chunk of information should be covered in one or
two slides. When presenting, it is important to remember that each sub-topic
should have an introduction followed by an explanation and end in a conclusion.
Alluding back to the file analogy, the introduction provides the learner an
opportunity to scan their internal filing system and choose a file in which to
store the knowledge. The explanation presents the knowledge to the learner in a
usable format, and the conclusion allows the learner to file the knowledge and
attach a tag in order to facilitate retrieval. The words used in the narration
should communicate to the learner when a new topic is beginning. These words,
combined with a new slide, communicate in a non-direct way that a new topic has
begun. Phrases such as, “Moving on to…” or “Now let’s look at…” are excellent
ways to communicate to a learner that a new topic is beginning.
Conclusion
In 2001, Marc Prensky coined the term, “Digital Natives.” These are
individuals who have never lived without a personal computer, or for that
matter, the internet. These Digital Natives are our present generation of
learners and have forced a step change in the way information is presented and
received. It is incumbent on educators to make this change. The principles put
forward in Multimedia Learning Theory ensure that the current and future
generations of students embrace learning and that the learning will be
effective.
References
Cuban, L. (1986). Film and Radio: The Promise of
Bringing the World into the Classroom. In Teachers and Machines. New
York, New York: Teacher's College Press.
Mayer, R. (2005). Cognitive Theory of Multimedia
Learning. In The Cambridge handbook of multimedia learning. Cambridge,
U.K.: Cambridge University Press.
Mayer, R., & Gallini, J. (1990). When Is an
Illustration Worth Ten Thousand Words? Journal of Educational Psychology,
82(4), 715-726.
Mayer, R. (2001). Principles of Multimedia Learning.
In Multimedia learning. Cambridge: Cambridge University Press.
Prensky, M. (2001). Digital Natives, Digital
Immigrants Part 1. On the Horizon, 9(5), 1-6.
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