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by Robert Bjork, PhD, UCLA
Summary
of the Article
Manipulations that speed the rate of acquisition
during training can fail to support long-term post-training performance, while
other manipulations that appear to introduce difficulties for the learner during
training can enhance post-training performance
Two
Factors Contribute to Non-optimal Training:
- The learner’s own misreading of his or her
progress and current state of knowledge during training
- Non-optimal relationships between the
conditions of training and the conditions that can be expected to prevail in
post-training real-world environment
The goals of teaching are
long-term goals
- Knowledge and skills that are durable and
survive long periods of disuse.
- To develop a mental representation of the
knowledge or skills that allows for flexible access to that knowledge or
skills
- Representations that allows the learner to
draw on what has been learned in order to perform in the real world conditions
that differ from the conditions of the training
Measuring
Learning
Measuring what someone knows or can do in some
standard situations does not tell you what they can do in a different situation
or when the conditions are different from those of the training. Even
superficial changes can disrupt performance remarkably.
Transfer
of Learning
Perceived similarity or the lack thereof, of new
tasks to old tasks is a critical factor in the transfer of learning. Effective
teaching should help the learner to recognize when the knowledge and skills
acquired during training are and are not applicable to new problems. What we
want in terms of human memory is –teaching that not only produces a stored
representation of the knowledge in LTM, but also to yield a representation
that remains accessible (recallable) as time passes and contextual cues change
Recall
Cause Deep Learning
The act of retrieving information is itself a
potent learning event. The retrieved information becomes more recallable in the
future. As a learning event, in fact, it appears that a successful retrieval can
be considerably more potent than an additional study opportunity, particularly
in terms of facilitating long-term recall.
In general creating durable memory and flexible
memory is partly a matter of achieving a certain type of encoding of that
information and partly practicing the retrieval process
Encoding:
- An understanding of the material which
involves a broader framework of interrelated concepts and ideas
- Critical information needs to multiply
encoded, not bound to a single set of semantic or situational cues
Retrieval
Practicing the production of the knowledge
Example–one chance to actually put on the
inflatable like vest on the airplane would result in a person being more likely
to be able to use the vest in an emergency—than the many times we have been told
and shown by the stewardess.
It is also desirable to induce successful access
to knowledge and procedures in a variety of situations that differ in the
cues they give and do not give.
Basis Principles to Produce
Long Term Learning
Introduce many more difficulties and challenges
for the learner than are usually present in the typical teacher’s classroom
Introducing variation and/or unpredictability in
the teaching environment causes difficulty for the learner but enhances
long-term recall—especially the ability to transfer the knowledge to novel but
related tasks
Example in motor skill performance scheduling,
rather than blocking the trails practice trial in random fashion by task type
has shown to impair performance during training but enhance long term
performance
Use of
Testing
The act of retrieval induced by recall tests
can be considerably more potent than a study opportunity in facilitating future
recall. Study recall produced better immediate recall but test trails
produced better recall after 48 hours.
Expanding retrieval practice, in which
successive recall tests are made progressively more difficult by increasing
the time and intervening events prior to each next test facilitates long-term
recall substantially—
The cause of the better recall
is likely that the learner in responding to the difficulties and challenges and
the manipulations is forced into more elaborate encoding processes and more
substantial and varied retrieval processes
Misperception by Teachers
The tendency of teachers is to be pushed toward
instruction that maximizes the performance or evaluation reaction of the
students—this is made worse by institutions that evaluate the teacher on the
immediate reactions of the students not the long term gains that they make.
Metamemory
Another important measure of learning is the
degree to which students gain a valid assessment of their own state of learning
or competence. Individuals who have illusions of comprehension or competence
pose a greater hazard to themselves and others than do individuals who correctly
assess that they lack some requisite information or skill.
It is as important to educate subjective
experience as it is objective experience
Rapids progress in the form of improved
performance is reassuring to the learner even though little learning may be
taking place
Where as struggling and making errors is
distressing, even though substantial learning may be taking place
It is clear from the current research that
memory is remarkably multifaceted
One subjective or objective measure of
the strength of a memory representation may not correlate with the strength
of a different subjective or objective measure
The learner because of the condition of the
learning—blocked practice—immediate feedback, fixing of the learning conditions
may be artificially supported during the learning—resulting in a false sense of
long term readiness
The learner can rely too
heavily on an unreliable index—the current ease of access to the information or
skill—as a measure of the extent to which learning in a broader sense has been
achieved
Conclusion
Some of the best ways to achieve the goal of
long-term gain are:
- Varying the conditions of the learning
- Inducing contextual interference
- Distributing practice
- Reducing the frequency of augmented
feedback
- Using tests as learning events
However students (and institutions) must be made
receptive to these types of manipulations and change their attitudes towards
the meaning of errors and mistakes.
People learn by making mistakes and correcting
them—learning environments that prevent certain mistakes form happening –and
give the students a false sense of competence my be just delaying the mistakes
to the post learning setting (work) where they really matter.
Finally when we embark on any substantial
learning enterprise we should probably find the absence, not the presence, of
errors, mistakes and difficulties to be distressing
We often fall short of helping students to learn
for long term recall by failing to incorporate the variability, delays,
uncertainties, and other challenges that learner can be expected to face in the
real world. |