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<title>Worked-example effect</title>
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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Worked-example effect</span></span>
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<p>The <b>worked-example effect</b> is a learning effect predicted by <a href="Cognitive_load" title="Cognitive load">cognitive load theory</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Specifically, it refers to improved learning observed when worked examples are used as part of instruction, compared to other instructional techniques such as problem-solving<sup id="cite_ref-:0_2-0" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> and discovery learning.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> According to Sweller: "The worked example effect is the best known and most widely studied of the cognitive load effects".<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 165">: 165 </span></sup>
</p><p>Worked examples improve learning by reducing cognitive load during skill acquisition, and "is one of the earliest and probably the best known cognitive load reducing technique".<sup id="cite_ref-:1_5-0" class="reference"><a href="#cite_note-:1-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 3">: 3 </span></sup> In particular, worked examples provide instructions to reduce <a href="Cognitive_load#Extraneous" title="Cognitive load">extraneous cognitive load</a> and increase <a href="Cognitive_load#Germane" title="Cognitive load">germane cognitive load</a> for the learner initially when few <a href="Schema_(psychology)" title="Schema (psychology)">schemas</a> are available. <a href="Cognitive_load#Extraneous" title="Cognitive load">Intrinsic cognitive load</a> is a third type of cognitive load that provides a base load that is irreducible. Extraneous load is reduced by scaffolding of worked examples at the beginning of skill acquisition. Finally, worked examples can also increase germane load when prompts for <a class="mw-selflink-fragment" href="#Self-explanations">self-explanations</a> are used.<sup id="cite_ref-:1_5-1" class="reference"><a href="#cite_note-:1-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 3">: 3 </span></sup>
</p><p>Renkl suggests that worked examples are best used in "sequences of <a class="mw-selflink-fragment" href="#Faded_worked_examples">faded examples</a> for certain problem types in order to foster understanding in skill acquisition," and that prompts, help system, and/or training be used to facilitate the learners' self-explanations.<sup id="cite_ref-:0_2-1" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> This view is supported by experimental findings comparing a faded worked-example procedure and a well-supported problem-solving approach.<sup id="cite_ref-:2_6-0" class="reference"><a href="#cite_note-:2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>
</p><p>"However, it is important to note that studying [worked examples] loses its effectiveness with increasing expertise",<sup id="cite_ref-:0_2-2" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> an effect known as the <a href="Expertise_reversal_effect" title="Expertise reversal effect">expertise reversal effect</a>.<sup id="cite_ref-:3_7-0" class="reference"><a href="#cite_note-:3-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 259">: 259 </span></sup> Further limitations of the classical worked-example method include "focusing on one single correct solution and on algorithmic skill domains".<sup id="cite_ref-:0_2-3" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Addressing such restrictions in multimedia learning environments remains an area of active research.<sup id="cite_ref-:0_2-4" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Definitions">Definitions</h2></div>
<div class="mw-heading mw-heading3"><h3 id="Worked_example">Worked example</h3></div>
<p>"A <b>worked example</b> is a step-by-step demonstration of how to perform a task or how to solve a problem".<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 190">: 190 </span></sup> Worked examples are designed to support initial acquisition of cognitive skills through introducing a formulated problem, solution steps and the final solution.<sup id="cite_ref-:0_2-5" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Studying worked examples is an effective instructional strategy to teach complex problem-solving skills.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> This is because example-based instruction provides expert mental models to explain the steps of a solution for novices.
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<p>Worked examples, like the example above, are commonly found in mathematics or geometry textbooks, but they are also used in other fields. Worked examples had been developed for music, chess, athletics, and computer programming.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 185">: 185 </span></sup>
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<div class="mw-heading mw-heading3"><h3 id="Faded_worked_examples">Faded worked examples</h3></div>
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</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="Expertise_reversal_effect#Addressing" title="Expertise reversal effect">Addressing Expertise Reversal Effect</a></div>
<p>"In order to facilitate the transition from learning from worked examples in earlier stages of skill acquisition to problem solving in later stages, it is effective to successively fade out worked solution steps".<sup id="cite_ref-:4_11-0" class="reference"><a href="#cite_note-:4-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 59">: 59 </span></sup> Fading out steps in worked example triggers self-explanation activities, which consists of the learners' own explanations to the reasons for the given solution steps.<sup id="cite_ref-:4_11-1" class="reference"><a href="#cite_note-:4-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 59">: 59 </span></sup>
</p><p>As learners gain expertise in the subject area of interest, worked examples lose their effectiveness due to the expertise reversal effect. Using faded worked examples addresses this effect by structuring the learners' transition from studying worked example to learning with problem-solving.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading3"><h3 id="Self-explanations">Self-explanations</h3></div>
<p>According to Renkl, self-explanations are "explanations provided by learners and mainly directed to themselves. They contain information that is not directly given in the learning materials and that refer to solution steps and the reasons for them. They can also refer to structural and surface features of problems or problem types."<sup id="cite_ref-:0_2-6" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p><p>"Self-explanations are important and necessary"<sup id="cite_ref-:5_13-0" class="reference"><a href="#cite_note-:5-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 148">: 148 </span></sup> when working with worked example as "successful learners studied the examples for longer periods and explained them more actively to themselves".<sup id="cite_ref-:5_13-1" class="reference"><a href="#cite_note-:5-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> However, as most learners are passive and superficial self-explainers,<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> they "should be guided to actively self-explain worked-out examples".<sup id="cite_ref-:0_2-7" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Evidence_for">Evidence for</h2></div>
<p>The worked-example effect suggests that learning by studying worked examples is more effective than problem solving, and a number of research studies have demonstrated this effect.
</p><p>Sweller and Cooper were not the first to use this form of instruction, but certainly they were the first to describe it from a <a href="Cognitive_load" title="Cognitive load">cognitive load</a> perspective.<sup id="cite_ref-:6_15-0" class="reference"><a href="#cite_note-:6-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:7_16-0" class="reference"><a href="#cite_note-:7-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> While studying problem-solving tactics, Sweller and Cooper used worked examples as a substitute for conventional problem-solving for those learning algebra. They found that learners who studied worked examples performed significantly better than learners who actively solved problems.<sup id="cite_ref-:6_15-1" class="reference"><a href="#cite_note-:6-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:7_16-1" class="reference"><a href="#cite_note-:7-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Sweller and Cooper had developed worked examples as a means of limiting problem solving search.<sup id="cite_ref-:6_15-2" class="reference"><a href="#cite_note-:6-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> Importantly, Sweller and Cooper used worked-out example-problem pairs as opposed to individual worked examples.<sup id="cite_ref-:6_15-3" class="reference"><a href="#cite_note-:6-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup>
Renkl suggests learning from worked-out examples is more effective when a series is used.<sup id="cite_ref-:0_2-8" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Pillay found that worked examples showing three intermediate problem stages were more effective than showing only one but suggested that the distance between stages needs to be small enough to allow students to connect them without having to create their own linkages.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup>
</p><p>Schwonke et al., in two experiments with Cognitive Tutors, investigated the worked example effect. In one experiment, students used Geometry <a href="Cognitive_Tutor" class="mw-redirect" title="Cognitive Tutor">Cognitive Tutor</a> which differed by the presentation of worked examples or not. In the experiment, students that were presented with worked examples needed less learning time to obtain the procedural skill and conceptual understanding of geometry. In the second experiment, the authors aimed at avoiding the negative effects that occurred due to the lack of understanding of the purpose of worked examples, replicate the positive effects obtained in the first experiment and investigate the underlying learning approaches that explain why worked examples had greater efficiency effects. To achieve these objectives, the students were asked to think aloud, using the <a href="Think_aloud_protocol" title="Think aloud protocol">think aloud protocol</a>. The results showed that the efficiency effect obtained in the first experiment was also replicated in the second experiment and the students had a deeper conceptual understanding.<sup id="cite_ref-:2_6-1" class="reference"><a href="#cite_note-:2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 264">: 264 </span></sup>
</p><p>Gog, Kester and Paas (2011) investigated the effectiveness of three strategies of example-based learning to problem solving on novices' cognitive load and learning, using electrical circuit troubleshooting tasks. The three strategies used are: worked example only, example-problem pairs and problem-example pairs. The results of the study showed that students in the worked example only and example-problems pair's conditions significantly outperformed students in the problem-example pair and problems solving conditions. It was also observed that higher performance was reached with significantly lower investment of mental effort during the training.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Expertise_reversal_effect">Expertise reversal effect</h3></div>
<p>Although a number of research studies have shown that worked examples have positive effects on learners, Kalyuga et al. (2000, 2001) showed that the worked-example effect is related to the expertise level of a learner, referred to as <a href="Expertise_reversal_effect" title="Expertise reversal effect">expertise reversal effect</a>. In three studies, they used worked examples in different experiments, on-screen diagrams in mechanical engineering, examples with explanatory based instruction on writing circuits for relay circuits and programming logic. In the different studies, they showed that the efficiency effect of worked examples became ineffective and often resulted in negative effects for more knowledgeable learners.<sup id="cite_ref-:8_20-0" class="reference"><a href="#cite_note-:8-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:3_7-1" class="reference"><a href="#cite_note-:3-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
However, Nievelstein et al. (2013) argues that both the worked-example effect and the expertise reversal effect that have been previously studied were based on well-structured cognitive tasks such as mechanics.<sup id="cite_ref-:8_20-1" class="reference"><a href="#cite_note-:8-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:9_23-0" class="reference"><a href="#cite_note-:9-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> In a study using less-structured task, using legal cases, Nievelstein et al. investigated worked-example effect and expertise reversal effects on both novice and advanced law students. The results of the study indicate that worked examples had efficiency effect for both the novice students and advanced law students, even though the advanced students had significantly more prior knowledge.<sup id="cite_ref-:9_23-1" class="reference"><a href="#cite_note-:9-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup>
</p><p>Another issue regarding worked examples was observed by Quilici and Mayer, who found that providing learners with three examples of each problem type, as opposed to one, did not result in any differences in students' ability to sort subsequent problems into the appropriate types.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> As Wise and O'Neill point out, this is not to say additional guidance will never lead to learning gains; it simply cannot be assumed it always will.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup>
</p><p>There is also some debate as to how complete the worked example needs to be. Paas found that learners in a "completion" condition, who were given a problem only halfway worked out, performed just as well on test problems as those given the problems fully worked.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Developing_effective_worked_examples">Developing effective worked examples</h2></div>
<p>Ward and Sweller suggest that under some conditions "worked examples are no more effective, and possibly less effective, than solving problems".<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page: 1">: 1 </span></sup> Thus it is important that worked examples be structured effectively, so that extraneous cognitive load does not impact learners. Chandler and Sweller suggested an important way to structure worked examples. They found that the integration of text and diagrams (within worked examples) reduces <a href="Extraneous_cognitive_load" class="mw-redirect" title="Extraneous cognitive load">extraneous cognitive load</a>.<sup id="cite_ref-:10_28-0" class="reference"><a href="#cite_note-:10-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> They referred to this single modality, attention learning effect as the <a href="Split-attention_effect" class="mw-redirect" title="Split-attention effect">split-attention effect</a>.<sup id="cite_ref-:10_28-1" class="reference"><a href="#cite_note-:10-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> Tabbers, Martens, and Van Merriënboer proposed that one may prevent split-attention by presenting text as audio.<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup>
</p><p>Renkl suggests that students only gain deep understanding through worked-out examples when the examples:
</p>
<ol><li>are self-explanatory,</li>
<li>provide principle-based, minimalist, and example-relation instructional explanations as help</li>
<li>show relations between different representations</li>
<li>highlight structural features that are relevant for selecting the correct solution procedure</li>
<li>isolate meaningful building blocks.<sup id="cite_ref-:0_2-9" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li></ol>
<p>Not all worked examples are print-based as those in the Tarmizi and Sweller study. Lewis, for instance, proposed animated demonstrations are a form of worked example.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> Animated demonstrations are useful because this multimedia presentation combines the worked example and modality effects within a single instructional strategy.
</p>
<div class="mw-heading mw-heading2"><h2 id="Audience">Audience</h2></div>
<div class="mw-heading mw-heading3"><h3 id="Novice_learners">Novice learners</h3></div>
<p>As it turns out, worked examples are not appropriate for all learners. Learners with prior knowledge of the subject find this form of instruction redundant, and may suffer the consequences of this redundancy. This has been described as the <a href="Expertise_reversal_effect" title="Expertise reversal effect">expertise reversal effect</a>.<sup id="cite_ref-:11_31-0" class="reference"><a href="#cite_note-:11-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> It is suggested that worked examples be faded over time to be replaced with problems for practice.<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> Thus it is important to consider the learner as well as the media while developing worked examples, else learners may not perform as expected.
</p><p>Since worked-out examples include the steps toward reaching the solution, they can only be used in skill domains where algorithms can be applied (mathematics, physics, programming, etc.).<sup id="cite_ref-:0_2-10" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> For creative pursuits such as interpreting poems, or learning contexts where there is an infinite number of potential confounding factors such as conflict resolution, effective leadership, or multicultural communication, solution steps are more difficult to describe and worked-out examples may not be the most effective instructional method.
The worked-out example approach is considered one of the best multimedia principles of learning mathematics. Worked examples help to direct the learner's attention to what needs to be studied as well as developing literacy skills. They serve as a guide to prepare novice learners for effective problem solving after gaining an understanding of any concept under consideration. Renkl argues that learners have a very restricted understanding of the domain when they try to solve problems without any worked examples. Thus, learners gain deep understanding of a skill domain when they receive worked-out examples at the beginning of cognitive skill acquisition. The examples give learners a clue to the right steps to solving the problem.<sup id="cite_ref-:0_2-11" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p><p>A 2006 piece of research found that novice learners can still have difficulty understanding concepts if given examples with incomplete or somewhat inaccurate information (known as faded examples) prior to acquiring basic <a href="Domain_knowledge" title="Domain knowledge">domain knowledge</a> or literacy skills in the subject matter. This is based on how a novice or expert learner structures his or her learning schemas — knowing the appropriate procedure/approach to use in retrieving and interpreting the problem.<sup id="cite_ref-:12_33-0" class="reference"><a href="#cite_note-:12-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> On the other hand, worked-out examples may constitute cognitive load and cause redundancy for learners with prior knowledge,<sup id="cite_ref-:11_31-1" class="reference"><a href="#cite_note-:11-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> in contrast with novice learners for whom worked-out examples rather serve as a compass that provides a direct guide to solving similar problems.<sup id="cite_ref-:12_33-1" class="reference"><a href="#cite_note-:12-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> This also applies when novice learners evaluate prototypes, which embody the main characteristics of a work, worked examples. This can also assist the novice learner with the semantic processing needed to fully comprehend a work of art or design.<sup id="cite_ref-:12_33-2" class="reference"><a href="#cite_note-:12-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup>
</p><p>The worked examples model is one of several strong cognitive-instruction techniques with great importance that help teachers foster learning. It is an application principle that significantly enhances novice learners' patterns of knowledge acquisition in the contexts of authentic problem solving. Reed and Bolstad indicate that one example may be insufficient for helping a student induce a usable idea and that the incorporation of a second example illustrating the idea, especially one that is more complex than the first, garners significant benefits for transfer performance. So, "at least add a second example" appears to be a basic rule for worked-examples instructional design.<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> In addition, Spiro, Feltovich, Jacobson, &amp; Coulson affirmed that providing a wide range of examples (and having students emulate examples) that illustrate multiple strategies and approaches to similar problems helps foster broad knowledge transfer and "cognitive flexibility".<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup>
</p><p>The instructional model of example-based learning by Renkl and Atkinson suggests that students gain a deeper understanding of domain principles when they receive worked examples at the beginning of cognitive skill acquisition.<sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
<ul><li><a href="Cognitive_load" title="Cognitive load">Cognitive load</a></li>
<li><a href="Example_choice" title="Example choice">Example choice</a></li>
<li><a href="Expertise_reversal_effect" title="Expertise reversal effect">Expertise reversal effect</a></li>
<li><a href="Multimedia_learning" class="mw-redirect" title="Multimedia learning">Multimedia learning</a></li>
<li><a href="Procedural_memory" title="Procedural memory">Procedural memory</a></li>
<li><a href="Split_attention_effect" title="Split attention effect">Split attention effect</a></li>
<li><a href="Subgoal_labeling" title="Subgoal labeling">Subgoal labeling</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">Sweller, 1988</span>
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</style><cite id="CITEREFRenkl2005" class="citation book cs1">Renkl, A. (2005). "The worked-out examples principle in multimedia learning". In Mayer, R. E. (ed.). <a rel="nofollow" class="external text" href="https://www.cambridge.org/core/books/abs/cambridge-handbook-of-multimedia-learning/workedout-examples-principle-in-multimedia-learning/5A8A07C14A2911C49982D19950EF5307"><i>The Cambridge Handbook of Multimedia Learning</i></a>. Cambridge: <a href="Cambridge_University_Press" title="Cambridge University Press">Cambridge University Press</a>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a>&nbsp;<bdi>9780521838733</bdi>.</cite></span>
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<li id="cite_note-:3-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-:3_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:3_7-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFKalyuga2007" class="citation journal cs1">Kalyuga, S. (2007). "Expertise Reversal effect and its implications for learner-tailored instruction". <i><a href="Educational_Psychology_Review" title="Educational Psychology Review">Educational Psychology Review</a></i>. <b>19</b> (4): <span class="nowrap">509–</span>539. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs10648-007-9054-3">10.1007/s10648-007-9054-3</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1040-726X">1040-726X</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a>&nbsp;<a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:144221740">144221740</a>.</cite></span>
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<li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><cite id="CITEREFAtkinsonDerryRenklWortham2000" class="citation journal cs1">Atkinson, R. K.; Derry, S. J.; Renkl, A.; Wortham, D. W. (Summer 2000). "Learning from examples: Instructional principles from the worked examples research". <i><a href="Review_of_Educational_Research" title="Review of Educational Research">Review of Educational Research</a></i>. <b>70</b> (2): <span class="nowrap">181–</span>214. <a href="CiteSeerX_(identifier)" class="mw-redirect" title="CiteSeerX (identifier)">CiteSeerX</a>&nbsp;<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.115.1348">10.1.1.115.1348</a></span>. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.3102%2F00346543070002181">10.3102/00346543070002181</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0034-6543">0034-6543</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a>&nbsp;<a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:2956761">2956761</a>.</cite></span>
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<li id="cite_note-:4-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-:4_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:4_11-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFRenklAtkinsonGroße2004" class="citation journal cs1">Renkl, A.; Atkinson, R. K.; Große, C. S. (2004). "How fading worked solution steps works–a cognitive load perspective". <i>Instructional Science</i>. <b>32</b> (<span class="nowrap">1–</span>2): <span class="nowrap">59–</span>82. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1023%2FB%3ATRUC.0000021815.74806.f6">10.1023/B:TRUC.0000021815.74806.f6</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0020-4277">0020-4277</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a>&nbsp;<a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:56832624">56832624</a>.</cite></span>
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<li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><cite id="CITEREFSaldenAlevenSchwonkeRenkl2010" class="citation journal cs1">Salden, R. J. C. M.; Aleven, V.; Schwonke, R.; Renkl, A. (May 2010). <span class="id-lock-subscription" title="Paid subscription required"><a rel="nofollow" class="external text" href="https://www.jstor.org/stable/23372797">"The expertise reversal effect and worked examples in tutored problem solving"</a></span>. <i>Instructional Science</i>. <b>38</b> (3): <span class="nowrap">289–</span>307. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs11251-009-9107-8">10.1007/s11251-009-9107-8</a>. <a href="JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a>&nbsp;<a rel="nofollow" class="external text" href="https://www.jstor.org/stable/23372797">23372797</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a>&nbsp;<a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:53333474">53333474</a>.</cite></span>
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<li id="cite_note-:5-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-:5_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:5_13-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFChiBassokLewisReimann1989" class="citation journal cs1">Chi, M. T.; Bassok, M.; Lewis, M. W.; Reimann, P.; Glaser, R. (1989). <a rel="nofollow" class="external text" href="https://doi.org/10.1207%2Fs15516709cog1302_1">"Self-explanations: How students study and use examples in learning to solve problems"</a>. <i>Cognitive Science</i>. <b>13</b> (2): <span class="nowrap">145–</span>182. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1207%2Fs15516709cog1302_1">10.1207/s15516709cog1302_1</a></span>.</cite></span>
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<li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><cite id="CITEREFRenkl1997" class="citation journal cs1">Renkl, A. (January 1997). "Learning from worked-out examples: A study on individual differences". <i>Cognitive Science</i>. <b>21</b> (1): <span class="nowrap">1–</span>29. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1207%2Fs15516709cog2101_1">10.1207/s15516709cog2101_1</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0364-0213">0364-0213</a>.</cite></span>
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<li id="cite_note-:6-15"><span class="mw-cite-backlink">^ <a href="#cite_ref-:6_15-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:6_15-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:6_15-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-:6_15-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFSwellerCooper1985" class="citation journal cs1">Sweller, J.; Cooper, G.A. (1985). <span class="id-lock-subscription" title="Paid subscription required"><a rel="nofollow" class="external text" href="https://www.jstor.org/stable/3233555">"The use of worked examples as a substitute for problem solving in learning algebra"</a></span>. <i>Cognition and Instruction</i>. <b>2</b> (1): <span class="nowrap">59–</span>89. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1207%2Fs1532690xci0201_3">10.1207/s1532690xci0201_3</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0737-0008">0737-0008</a>. <a href="JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a>&nbsp;<a rel="nofollow" class="external text" href="https://www.jstor.org/stable/3233555">3233555</a>.</cite></span>
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<li id="cite_note-:7-16"><span class="mw-cite-backlink">^ <a href="#cite_ref-:7_16-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:7_16-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFCooperSweller1987" class="citation journal cs1">Cooper, G.; Sweller, J. (1987). "Effects of schema acquisition and rule automation on mathematical problem-solving transfer". <i><a href="Journal_of_Educational_Psychology" title="Journal of Educational Psychology">Journal of Educational Psychology</a></i>. <b>79</b> (4): <span class="nowrap">347–</span>362. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1037%2F0022-0663.79.4.347">10.1037/0022-0663.79.4.347</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0022-0663">0022-0663</a>. <a href="OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a>&nbsp;<a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/7129039903">7129039903</a>.</cite></span>
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<li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text">Sweller, 1988</span>
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