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The role of metacognitive skills in learning to solve problems

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Study III: added value <strong>of</strong> the task model 137<br />

A t-test was used <strong>in</strong> order <strong>to</strong> compare the amount <strong>of</strong> time spent <strong>in</strong> each<br />

condition on the elements <strong>of</strong> KM Quest. Elements that are <strong>in</strong>dicated <strong>in</strong><br />

bold <strong>in</strong> table 6.20 <strong>in</strong>dicate that a significant difference exists between<br />

the conditions.<br />

No-model<br />

Model<br />

Mean % <strong>of</strong> time spent<br />

Chat 44.30 11.40 23 13.68 4.84 23<br />

Newspaper 3.74 1.28 23 2.26 1.29 23<br />

Feedback 1.48 1.01 23 1.19 0.96 23<br />

His<strong>to</strong>ry 1.28 0.87 23 1.09 0.97 23<br />

KM Dictionary 0.53 0.65 23 0.27 0.38 23<br />

Visualization handbook 1.94 2.01 23 0.54 0.68 23<br />

Coltec 0.84 0.96 23 1.15 0.82 23<br />

Interventions handbook 17.35 5.47 23 2.98 3.94 23<br />

Indica<strong>to</strong>r handbook 1.04 0.73 23 2.12 1.10 23<br />

KM handbook 3.03 2.73 23 0.61 0.97 23<br />

Visualizations 9.26 4.75 23 2.68 2.61 23<br />

FOCUS 0.00 0.00 23 34.29 15.48 23<br />

ORGANISE 9.13 12.37 23 17.00 9.64 23<br />

IMPLEMENT 3.07 1.10 23 4.19 2.48 23<br />

MONITOR 0.00 0.00 23 13.01 4.46 23<br />

Other 3.00 1.18 23 2.95 1.80 23<br />

Table 6.20. Mean percentage <strong>of</strong> time per student spent on several elements <strong>of</strong> KM<br />

Quest (Note: students <strong>in</strong> the no-model condition were forced <strong>to</strong> go through the OR-<br />

GANISE and IMPLEMENT phase only <strong>to</strong> shortlist and effectuate <strong>in</strong>terventions).<br />

In the no-model condition chatt<strong>in</strong>g clearly takes up relatively more<br />

time than <strong>in</strong> the model condition (T = 11.86, p < 0.01). Students <strong>in</strong><br />

the no-model condition spend over 40% percent <strong>of</strong> the game time on<br />

chatt<strong>in</strong>g, aga<strong>in</strong>st almost 15% <strong>in</strong> the model condition. In absolute numbers,<br />

chatt<strong>in</strong>g takes approximately one and a half hours <strong>in</strong> the no-model<br />

condition aga<strong>in</strong>st approximately 50 m<strong>in</strong>utes <strong>in</strong> the model condition.<br />

Students <strong>in</strong> the no-model condition make only about one-third <strong>of</strong> all<br />

contributions. Although students <strong>in</strong> the no-model condition spend more<br />

time <strong>in</strong> the chat, they make fewer contributions. This suggests that<br />

they take more time <strong>to</strong> th<strong>in</strong>k. <strong>The</strong>re is no <strong>in</strong>dication that the length<br />

<strong>of</strong> the contributions differs over conditions. Also, students <strong>in</strong> the nomodel<br />

condition use more time <strong>to</strong> read the newspaper than students <strong>in</strong><br />

the model condition (T = 4.15, p < 0.01).<br />

As for the available support elements <strong>in</strong> KM Quest, students <strong>in</strong> the nomodel<br />

condition take more time for the follow<strong>in</strong>g elements than students

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