Difference between revisions of "Refinement and Fluency"

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== The PSLC Refinement and Fluency cluster ==
+
= The PSLC Refinement and Fluency cluster =
  
=== Abstract ===
+
== Abstract ==
The studies in this cluster concern the design and organization of instructional activities to facilitate the acquisition, refinement, and fluent control of critical knowledge components. The core issue examined in this cluster include:
+
The studies in this cluster concern the design and organization of instructional activities to facilitate the acquisition, [[refinement]], and fluent control of critical [[knowledge components]]. The research of the cluster addresses a series of core propositions, including but not limited to the following.
# '''task analysis''': To design effective instruction, we must analyze learning tasks into their simplest components.
 
# '''fluency from basics''':  For true fluency, higher level skills must be grounded on well-practiced lower level skills.
 
# '''in vivo evaluation''': The work in this cluster is targeted toward the in vivo evaluation of instruction in basic skills.
 
# '''scheduling of practice''': The optimal scheduling of practice uses principles of memory consolidation to maximize robust learning and achieve mastery.
 
# '''resonance''': The acquisition of knowledge components can be facilitated by evoking associations between divergent coding systems.
 
# '''explicit instruction''': Explicit rule-based instruction facilitates the acquisition of specific skills, but only if the rules are simple.
 
# '''implicit instruction''': On the other hand, implicit instruction or exposure serves to foster the development of initial familiarity with larger patterns.
 
# '''immediacy of feedback''': A corollary of the emphasis on in vivo evaluation, scheduling, and explicit instruction is the idea that immediate feedback, which is a strong point of computerized instruction, facilitates learning.
 
# '''cue validity''': In both explicit and implicit instruction, cue validity plays a central role in determining ease of learning of knowledge components.
 
# '''focusing''': Instruction that focuses the learner's attention on valid cues will lead to more robust learning than unfocused instruction or instruction that focuses on less valid cues.
 
# '''learning to learn''': The acquisition of skills such as analysis, help-seeking, or advance organizers can promote future learning.
 
# '''transfer''': A learner's earlier knowledge places strong constraints on new learning, promoting some forms of learning, while blocking others.
 
  
The overall hypothesis is that instruction that systematically reflects the complex features of targeted knowledge in relation to the learner’s existing knowledge leads to more robust learning than instruction that does not. The principle is that the gap between targeted knowledge and existing knowledge needs to be directly reflected in the organization of instructional events. This organization includes the structure of knowledge components selected for instruction, the scheduling of learning events, practice, recall opportunities, explicit and implicit presentations, and other activities.
+
1. cognitive task analysis or knowledge component analysis: Complex knowledge consists of smaller components that can be identified through analysis of knowledge-based task performance and tested in experiments. To design effective instruction, learning tasks are anlayzed into simpler task components.  
  
This hypothesis can be rephrased in terms of the PSLC general hypothesis, which is that robust learning occurs when the learning event space is designed to include appropriate target paths, and when students are encouraged to take those paths.  The studies in this cluster focus on the formulation of well specified target paths with highly predictable learning outcomes.
+
2. fluency from basics: For true fluency, higher level skills must be grounded on well-practiced lower level skills.
  
===Significance===
+
3. scheduling of practice: [[Optimized scheduling]] of [[practice]] uses principles of memory to maximize robust learning and achieve mastery.
A core theme in this cluster is that instruction in basic skills can facilitate the acquisition and refinement of knowledge and prepare the learner for fluency-enhancing practice. Instruction that provides practice and feedback for basic skills on a schedule that closely matches observed student abilities is important for this goal, and can be effectively delivered by computer. In the area of second language learning, the strengths of computerized instruction are matched by certain weaknesses. In particular, computerized tutors are not yet good at speech recognition, making it difficult to assess student production. Moreover, contact with a human teacher can increase the breadth of language usage, as well as motivation. Therefore, an optimal environment for language learning would combine the strengths of computerized instruction with those of classroom instruction. It is possible that a similar analysis will apply to science and math.
 
  
=== Glossary ===
+
4. [[explicit instruction]]: Explicit instruction, i.e. instruction that either directly asserts information ("facts") or  provides rules, facilitates the acquisition and refinement of specific skills. Rules are effective only when they are relatively simple.
 +
 
 +
5. [[implicit instruction]]: Implicit instruction, i.e. exposure to to-be-learned patterns, can foster the development of pattern familiarity and strengthen connections of these patterns to other patterns.
 +
 
 +
6. immediacy of feedback: A corollary of the scheduling and explicit instruction propositions is that immediate feedback facilitates learning.
 +
 
 +
7. [[cue validity]]: In both explicit and implicit instruction, the validity of a cue for a knowledge component affects the learning of that knowledge component. (Cue validity is related to [[feature validity]].)
 +
 
 +
8. [[focusing]]: Instruction that directs (focuses) the learner's attention to valid cues leads to more robust learning than unfocused instruction or instruction that focuses on less valid cues.
 +
 
 +
9. learning to learn: The acquisition of skills and strategies that can generalize across learning tasks can promote new learning. Examples may be deep analysis, help-seeking, use of advance organizers, and, most generally, meta-cognitive strategies.
 +
 
 +
10. [[transfer]]: A learner's earlier knowledge places strong constraints on new learning, promoting some forms of learning, while inhibiting others.
 +
 
 +
The overall hypothesis is that instruction that systematically reflects the complex [[features]] of targeted knowledge in relation to the learner’s existing knowledge leads to more robust learning than instruction that does not. The principle is that the gap between targeted knowledge and existing knowledge needs to be directly reflected in the organization of instructional events. This organization includes the structure of knowledge components selected for instruction, the scheduling of learning events, practice, recall opportunities, explicit and implicit presentations, and other activities.
 +
 
 +
This hypothesis can be rephrased in terms of the PSLC general hypothesis, which is that [[robust learning]] occurs when the [[learning event space]] is designed to include appropriate target paths, and when students are encouraged to take those paths.  The studies in this cluster focus on the formulation of well specified target paths with highly predictable learning outcomes.
 +
 
 +
<br><center>[[Image:Rf.JPG]]</center>
 +
 
 +
==Significance==
 +
A core theme in this cluster is that instruction in basic skills can facilitate the acquisition and refinement of knowledge and prepare the learner for [[fluency]]-enhancing practice. Instruction that provides practice and feedback for basic skills on a schedule that closely matches observed student abilities is important for this goal, and can be effectively delivered by computer. In the area of second language learning, the strengths of computerized instruction are matched by certain weaknesses. In particular, computerized tutors are not yet good at speech recognition, making it difficult to assess student production. Moreover, contact with a human teacher can increase the breadth of language usage, as well as motivation. Therefore, an optimal environment for language learning would combine the strengths of computerized instruction with those of classroom instruction. It is possible that a similar analysis will apply to science and math.
 +
 
 +
== Glossary ==
 
[[:Category:Refinement and Fluency|Refinement and Fluency]] glossary.
 
[[:Category:Refinement and Fluency|Refinement and Fluency]] glossary.
  
=== Research question ===
+
== Research question ==
The research pursued in this cluster tests the empirical adequacy of the nine core assumptions listed in the Abstract.  Studies
+
The overall research question is how can instruction optimally support the acquisition, refinement, and fluent use of complex targeted knowledge, taking into account the learner’s existing knowledge in relation to the knowledge demands of the target domain? In examining this general question, the studies focus on features of the learning situation, including the following: the cognitive demands of targeted knowledge components, the scheduling of practice, the timing and extent of explicit [[instructional method|instructional events]] relative to implicit learning opportunities, and the role of feedback.
focusing on these various issues include the following:
 
# '''task analysis''': All studies in the cluster rely on task analysis to generate stimuli, instructional procedures, and evaluation methods.
 
# '''fluency from basics''':  All studies in the cluster focus on basic skills, such as vocabulary, dictation, grammatical categorization, and auditory learning. The Yoshimura-MacWhinney study of sentence production shows how fluency on the sentence level arises from consolidation of lower basic vocabulary skills.  The MacWhinney study of dication points in a similar direction for the influences of phonemics patterns on the overall sentence dictation.
 
# '''in vivo orientation''': All studies in this cluster target the development of in vivo instruction.
 
# '''scheduling of practice''': The Pavlik and MacWhinney studies emphasize the role of scheduling in minimize the time students require to achieve mastery of a basic skill.
 
# '''resonance''': Studies that examine resonance between representations as a facilitator of learning include: the study of Hanzi character learning by Liu et al., and the Pavlik-MacWhinney study of vocabulary learning in Chinese,
 
# '''explicit instruction''': The studies examining explicit instruction include the Presson-MacWhinney study of French gender cue learning, the Zhang-MacWhinney study of pinyin dictation, and the Mitamura-Wylie study of article selection.
 
# '''implicit instruction''': No studies are currently examining the generalized effect of implicit instruction.
 
# '''immediacy of feedback''': All the studies in this cluster provide immediate feedback, often with careful diagnosis, based on tracking of individual subject performance.
 
# '''cue validity''': The Presson-MacWhinney gender study, the Zhang-MacWhinney pinyin dictation study, and the Mitamura-Wylie study of article selection all specifically examine the role of cue validity in predicting initial learning and robustness.
 
# '''focusing''': The study of articulatory cues to consonant and tone production by Liu et al. emphasize the role of focusing. The Tokowicz-Degani study of vocabulary learning examines the role of novelty in increasing attentional focusing during learning episodes.
 
# '''learning to learn''': The Roll-Aleven-McLaren study of help-seeking examines how students learn to learn, and
 
# '''transfer''': The Zhang-MacWhinney study of pinyin dictation examines negative transfer from English phonology to the learning of Mandarin phonology.  The Mitamura-Wylie study of article selection examines negative effects of L1 article usage on learning of English article usage.
 
  
=== Independent variables ===
+
== Independent variables ==
Alternative structures of instructional events based on alternative analyses of task demands, relevant knowledge components, and learner background. Assessing the learner’s background is essentially part of the learning task analysis.
+
At a general level, the research varies the organization of instructional events. This organization variable is typically  based on alternative analyses of task demands, relevant knowledge components, and learner background.
  
=== Dependent variables ===
+
== Dependent variables ==
The dependent variables in these studies are typically percentage correct and time to mastery of a structure at a certain level.
+
The dependent variables in these studies assess learner performance during learning events and following learning. Typical measures are percentage correct and number of learning trials or time to reach a given standard of performance. Response times are also measured in some cases.
  
=== Hypotheses ===
+
== Hypotheses ==
The general hypothesis is that learning is increased by instructional activities that require the learner to  attend to the relevant knowledge components of a learning task.  The specific hypotheses are:
+
Instruction that systematically reflects the complex features of targeted knowledge in relation to the learner’s existing knowledge leads to more robust learning than instruction that does not. More specifically, the initial acquisition of knowledge and its refinement benefit from instructional activities that require the learner to attend to and encode [[valid features]] of the learning content. The fluency corollary: Fluency builds on the knowledge components acquired and refined in learning, strengthening and integrating these components through practice.
# '''task analysis''': To design effective instruction, we must analyze learning tasks into their simplest components.
 
# '''fluency from basics''':  For true fluency, higher level skills must be grounded on well-practiced lower level skills.
 
# '''in vivo evaluation''': The work in this cluster is targeted toward the in vivo evaluation of instruction in basic skills.
 
# '''scheduling of practice''': The optimal scheduling of practice uses principles of memory consolidation to maximize robust learning and achieve mastery.
 
# '''resonance''': The acquisition of knowledge components can be facilitated by evoking associations between divergent coding systems.
 
# '''explicit instruction''': Explicit rule-based instruction facilitates the acquisition of specific skills, but only if the rules are simple.
 
# '''implicit instruction''': On the other hand, implicit instruction or exposure serves to foster the development of initial familiarity with larger patterns.
 
# '''immediacy of feedback''': Instruction that provides immediate, diagnostic feedback will be superior to instruction that does not.
 
# '''cue validity''': In both explicit and implicit instruction, cue validity plays a central role in determining ease of learning of knowledge components.
 
# '''focusing''': Instruction that focuses the learner's attention on valid cues will lead to more robust learning than unfocused instruction or instruction that focuses on less valid cues.
 
# '''learning to learn''': The acquisition of skills such as analysis, help-seeking, or advance organizers can promote future learning.
 
# '''transfer''': A learner's earlier knowledge places strong constraints on new learning, promoting some forms of learning, while blocking others.
 
  
=== Explanation ===
 
Attention to features of the task domain as a knowledge component is processed leads to associating those features with the knowledge component.  If the features are valid, then forming or strengthening such associations facilitates retrieval during subsequent assessment or instruction, and thus leads to more robust learning. However, the robustness is also  dependent on the scheduling of learning events that promotes the long term retentiono of the associations.
 
  
=== Descendents ===
+
Specific hypotheses about the organization of instruction derive from task analyzes of specific domain knowledge and the existing knowledge of  the learner. A background assumption for most studies is that fluency is grounded in well-practiced lower level skills. A few examples of specific hypotheses are as follows:
 +
 +
1. Scheduling of practice hypothesis: The optimal scheduling of practice uses principles of memory consolidation to maximize robust learning and achieve mastery.
  
* [[Using syntactic priming to increase robust learning]] (de Jong, Perfetti, DeKeyser)
+
2. Resonance hypothesis: The acquisition of knowledge components can be facilitated by evoking associations between divergent coding systems. (This hypothesis is similar or perhaps the same as [[Coordinative Learning]] hypothesis or [[co-training]] more specifically whereby "divergent coding systems" here may be the same as "multiple input sources" in co-training.)
  
* [[Learning the role of radicals in reading Chinese]] (Liu et al.)
+
3. [[Explicit instruction]] hypothesis: Explicit rule-based instruction facilitates the acquisition of specific skills, but only if the rules are simple.
 +
 
 +
4. [[Implicit instruction]] hypothesis: Implicit instruction or exposure serves to foster the development of initial familiarity with larger patterns.
 +
 
 +
5. Feedback hypothesis: Instruction that provides immediate, diagnostic feedback will be superior to instruction that does not.
 +
 
 +
6. Cue validity hypothesis: In both explicit and implicit instruction, cue validity plays a central role in determining ease of learning of knowledge components. See also [[feature validity]].
 +
 
 +
7. [[Focusing]] hypothesis: Instruction that focuses the learner's attention on valid cues will lead to more robust learning than unfocused instruction or instruction that focuses on less valid cues.
 +
 
 +
8. Learning to learn hypothesis: The acquisition of certain skills in one context support future learning in other contexts. Such skills include  problem analysis, help-seeking, or advance organizers.
 +
 
 +
9. Learner knowledge hypothesis: A learner's existing knowledge places strong constraints on new learning, promoting some forms of learning, while blocking others.
  
* [[Basic skills training|French dictation training]] (MacWhinney)
+
10.  Active learning hypothesis: Even in simple tasks, learning is more robust when the learner actively engages in the learning material.
  
*[[French gender cues]] (Presson-MacWhinney)
+
== Explanation ==
 +
All knowledge involves content and procedures that are specific to a domain. An analysis of the domain reveals the complexities that a learner of a given background will face and the knowledge components that are part of the overall complexity. Accordingly, the organization of instruction is critical in allowing the learner to attend to the critical valid features of knowledge components and to integrated them in authentic performance. Acquiring valid features and strengthening their associations facilitates retrieval during subsequent assessment and instruction, leading to more robust learning. Additionally, robust learning is increased by the scheduling of learning events that promotes the [[long-term retention]] of the associations.
  
*[[Chinese pinyin dictation]] (Zhang-MacWhinney)
+
== Descendents ==
  
*[[Japanese fluency]] (Yoshimura-MacWhinney)
+
=== Explicit instruction ===
 +
'''A. Explicit vs Implicit.''' These projects typically compare a more explicit form of instruction with a more implicit form 
 +
* [[Learning the role of radicals in reading Chinese]] (Liu et al.)
 +
* [[Basic skills training|French dictation training]] (MacWhinney)
 +
* [[Providing optimal support for robust learning of syntactic constructions in ESL]] (Levin, Frishkoff, De Jong, Pavlik)
 +
* [[Extending the Self-Explanation Effect to Second Language Grammar Learning]] (Wylie, Koedinger, Mitamura)
  
* [[Intelligent_Writing_Tutor | First language effects on second language grammar acquisition]] (Mitamura-Wylie)
 
  
* [[Optimizing the practice schedule]] (Pavlik-MacWhinney)
+
'''B. Explicit attention manipulations''' studies typically vary features available to learner
 +
* [[Chinese pinyin dictation]] (Zhang-MacWhinney)
 +
* [[Learning a tonal language: Chinese]] (Wang, Perfetti, Liu) [Also Coordinative learning]
 +
* [[French gender cues | French grammatical gender cue learning]] (Presson, MacWhinney)
 +
** [[Learning French gender cues with prototypes | Instruction of French gender cues]] (Presson, MacWhinney)
 +
**[[French gender prototypes | Lab study of grammar learning contrasting explicit and implicit instruction and prototype usage]] (Presson, MacWhinney)
 +
**[[French gender attention | Lab study of effects of time pressure and explicitness on gender learning]] (Presson, MacWhinney)
  
* [[Semantic grouping during vocabulary training]] (Tokowicz-Degani)
+
'''C. Explicit instruction: Practice and Scheduling''' Typical studies control practice events and provide feedback
 +
* [[Optimizing the practice schedule]] (Pavlik et al.) [[Applying optimal scheduling of practice in the Chinese Learnlab|1]]
 +
* [[Japanese fluency]] (Yoshimura-MacWhinney)
 +
* [[Fostering fluency in second language learning]] (De Jong, Halderman, Perfetti)
 +
* [[Using learning curves to optimize problem assignment]] (Cen & Koedinger)
 +
* [[Learning ESL Vocabulary with Context and Definitions:  Order Effects and Self-Generation]] (Balass, Nelson, Perfetti)
  
*[[The_Help_Tutor__Roll_Aleven_McLaren|Tutoring a meta-cognitive skill: Help-seeking (Roll, Aleven & McLaren)]] [Was in Coordinative Learning and in Interactive Communication]
+
=== Knowledge accessibility ===
 +
'''A. Background knowledge''' These projects directly study effects of learners' background knowledge
 +
* [[Intelligent_Writing_Tutor | First language effects on second language grammar acquisition]] (Mitamura, Wylie)
 +
* [[Assistance_Dilemma_English_Articles | The Assistance Dilemma and the English Article System]] (Wylie, Mitamura, Koedinger)
 +
* [[The_Help_Tutor__Roll_Aleven_McLaren|Tutoring a meta-cognitive skill: Help-seeking (Roll, Aleven & McLaren)]] [Also in Interactive Communication]
 +
* [[The Impact of Native Writing Systems on 2nd Language Reading]] (Einikis, Ben-Yehudah, Fiez)
  
*[[Composition_Effect__Kao_Roll|What is difficult about composite problems? (Kao, Roll)]]
+
'''B. Availability of knowledge during learning'''
 +
* [[Optimizing the practice schedule]] (Pavlik et al.) [[Understanding paired associate transfer effects based on shared stimulus components|2]], [[Applying optimal scheduling of practice in the Chinese Learnlab|1]], [[Understanding encoding inhibition, retrieval inhibition and destructive interference effects of errors during practice|3]]
 +
* [[Using syntactic priming to increase robust learning]] (De Jong, Perfetti, DeKeyser)
 +
* [[Composition_Effect__Kao_Roll|What is difficult about composite problems? (Kao, Roll)]]
 +
* [[Arithmetical fluency project]] (Fiez)
 +
* [[A word-experience model of Chinese character learning]] (Reichle, Perfetti, & Liu)
 +
* [[Integrated Learning of Chinese]] (Liu, Perfetti, Wang, Wu)
 +
* [[Integration of reading, writing and typing in learning Chinese words]] (Liu, Perfetti, Guan, Wu, Wang)
  
 +
=== Active processing ===
 +
These projects also include some addressing issues of learner control
 
* [[Mental rotations during vocabulary training]] (Tokowicz-Degani)
 
* [[Mental rotations during vocabulary training]] (Tokowicz-Degani)
 +
*[[Note-Taking_Technologies | Note-taking Project Page (Bauer & Koedinger)]] [Also in Coordinative Learning]
 +
**[[Note-Taking: Restriction and Selection]] (completed)
 +
**[[Note-Taking: Focusing On Concepts]] (planned)
 +
**[[Note-Taking: Focusing On Quantity]] (planned)
 +
*[[Handwriting Algebra Tutor]] (Anthony, Yang & Koedinger) [Also in Coordinative Learning]
 +
**[[Lab study proof-of-concept for handwriting vs typing input for learning algebra equation-solving]] (completed)
 +
**[[In vivo comparison of Cognitive Tutor Algebra using handwriting vs typing input]] (in progress)
  
* [[arithmetical fluency project]] (Fiez)
+
===Other===
  
* [[HandwritingEquationSolving|A multimodal (handwriting) interface for solving equations]] (Anthony, Yang, & Koedinger) [Was in CL]
+
* [[Development of a Novel Writing System]] (Greene, Durisko, Ciuca, Fiez)
  
=== Annotated bibliography ===
+
== Annotated bibliography ==
 
Forthcoming
 
Forthcoming
  
 
[[Category:Cluster]]
 
[[Category:Cluster]]

Latest revision as of 01:50, 2 February 2010

The PSLC Refinement and Fluency cluster

Abstract

The studies in this cluster concern the design and organization of instructional activities to facilitate the acquisition, refinement, and fluent control of critical knowledge components. The research of the cluster addresses a series of core propositions, including but not limited to the following.

1. cognitive task analysis or knowledge component analysis: Complex knowledge consists of smaller components that can be identified through analysis of knowledge-based task performance and tested in experiments. To design effective instruction, learning tasks are anlayzed into simpler task components.

2. fluency from basics: For true fluency, higher level skills must be grounded on well-practiced lower level skills.

3. scheduling of practice: Optimized scheduling of practice uses principles of memory to maximize robust learning and achieve mastery.

4. explicit instruction: Explicit instruction, i.e. instruction that either directly asserts information ("facts") or provides rules, facilitates the acquisition and refinement of specific skills. Rules are effective only when they are relatively simple.

5. implicit instruction: Implicit instruction, i.e. exposure to to-be-learned patterns, can foster the development of pattern familiarity and strengthen connections of these patterns to other patterns.

6. immediacy of feedback: A corollary of the scheduling and explicit instruction propositions is that immediate feedback facilitates learning.

7. cue validity: In both explicit and implicit instruction, the validity of a cue for a knowledge component affects the learning of that knowledge component. (Cue validity is related to feature validity.)

8. focusing: Instruction that directs (focuses) the learner's attention to valid cues leads to more robust learning than unfocused instruction or instruction that focuses on less valid cues.

9. learning to learn: The acquisition of skills and strategies that can generalize across learning tasks can promote new learning. Examples may be deep analysis, help-seeking, use of advance organizers, and, most generally, meta-cognitive strategies.

10. transfer: A learner's earlier knowledge places strong constraints on new learning, promoting some forms of learning, while inhibiting others.

The overall hypothesis is that instruction that systematically reflects the complex features of targeted knowledge in relation to the learner’s existing knowledge leads to more robust learning than instruction that does not. The principle is that the gap between targeted knowledge and existing knowledge needs to be directly reflected in the organization of instructional events. This organization includes the structure of knowledge components selected for instruction, the scheduling of learning events, practice, recall opportunities, explicit and implicit presentations, and other activities.

This hypothesis can be rephrased in terms of the PSLC general hypothesis, which is that robust learning occurs when the learning event space is designed to include appropriate target paths, and when students are encouraged to take those paths. The studies in this cluster focus on the formulation of well specified target paths with highly predictable learning outcomes.


Rf.JPG

Significance

A core theme in this cluster is that instruction in basic skills can facilitate the acquisition and refinement of knowledge and prepare the learner for fluency-enhancing practice. Instruction that provides practice and feedback for basic skills on a schedule that closely matches observed student abilities is important for this goal, and can be effectively delivered by computer. In the area of second language learning, the strengths of computerized instruction are matched by certain weaknesses. In particular, computerized tutors are not yet good at speech recognition, making it difficult to assess student production. Moreover, contact with a human teacher can increase the breadth of language usage, as well as motivation. Therefore, an optimal environment for language learning would combine the strengths of computerized instruction with those of classroom instruction. It is possible that a similar analysis will apply to science and math.

Glossary

Refinement and Fluency glossary.

Research question

The overall research question is how can instruction optimally support the acquisition, refinement, and fluent use of complex targeted knowledge, taking into account the learner’s existing knowledge in relation to the knowledge demands of the target domain? In examining this general question, the studies focus on features of the learning situation, including the following: the cognitive demands of targeted knowledge components, the scheduling of practice, the timing and extent of explicit instructional events relative to implicit learning opportunities, and the role of feedback.

Independent variables

At a general level, the research varies the organization of instructional events. This organization variable is typically based on alternative analyses of task demands, relevant knowledge components, and learner background.

Dependent variables

The dependent variables in these studies assess learner performance during learning events and following learning. Typical measures are percentage correct and number of learning trials or time to reach a given standard of performance. Response times are also measured in some cases.

Hypotheses

Instruction that systematically reflects the complex features of targeted knowledge in relation to the learner’s existing knowledge leads to more robust learning than instruction that does not. More specifically, the initial acquisition of knowledge and its refinement benefit from instructional activities that require the learner to attend to and encode valid features of the learning content. The fluency corollary: Fluency builds on the knowledge components acquired and refined in learning, strengthening and integrating these components through practice.


Specific hypotheses about the organization of instruction derive from task analyzes of specific domain knowledge and the existing knowledge of the learner. A background assumption for most studies is that fluency is grounded in well-practiced lower level skills. A few examples of specific hypotheses are as follows:

1. Scheduling of practice hypothesis: The optimal scheduling of practice uses principles of memory consolidation to maximize robust learning and achieve mastery.

2. Resonance hypothesis: The acquisition of knowledge components can be facilitated by evoking associations between divergent coding systems. (This hypothesis is similar or perhaps the same as Coordinative Learning hypothesis or co-training more specifically whereby "divergent coding systems" here may be the same as "multiple input sources" in co-training.)

3. Explicit instruction hypothesis: Explicit rule-based instruction facilitates the acquisition of specific skills, but only if the rules are simple.

4. Implicit instruction hypothesis: Implicit instruction or exposure serves to foster the development of initial familiarity with larger patterns.

5. Feedback hypothesis: Instruction that provides immediate, diagnostic feedback will be superior to instruction that does not.

6. Cue validity hypothesis: In both explicit and implicit instruction, cue validity plays a central role in determining ease of learning of knowledge components. See also feature validity.

7. Focusing hypothesis: Instruction that focuses the learner's attention on valid cues will lead to more robust learning than unfocused instruction or instruction that focuses on less valid cues.

8. Learning to learn hypothesis: The acquisition of certain skills in one context support future learning in other contexts. Such skills include problem analysis, help-seeking, or advance organizers.

9. Learner knowledge hypothesis: A learner's existing knowledge places strong constraints on new learning, promoting some forms of learning, while blocking others.

10. Active learning hypothesis: Even in simple tasks, learning is more robust when the learner actively engages in the learning material.

Explanation

All knowledge involves content and procedures that are specific to a domain. An analysis of the domain reveals the complexities that a learner of a given background will face and the knowledge components that are part of the overall complexity. Accordingly, the organization of instruction is critical in allowing the learner to attend to the critical valid features of knowledge components and to integrated them in authentic performance. Acquiring valid features and strengthening their associations facilitates retrieval during subsequent assessment and instruction, leading to more robust learning. Additionally, robust learning is increased by the scheduling of learning events that promotes the long-term retention of the associations.

Descendents

Explicit instruction

A. Explicit vs Implicit. These projects typically compare a more explicit form of instruction with a more implicit form


B. Explicit attention manipulations studies typically vary features available to learner

C. Explicit instruction: Practice and Scheduling Typical studies control practice events and provide feedback

Knowledge accessibility

A. Background knowledge These projects directly study effects of learners' background knowledge

B. Availability of knowledge during learning

Active processing

These projects also include some addressing issues of learner control

Other

Annotated bibliography

Forthcoming