Knowledge construction does not increase gradually across successive discussion themes: messages in theme 2 reflect significantly lower levels, theme 3 significantly higher, and theme 4 no significant difference from theme 1.¶

Claim · All claims
Evidence · 1 study (3 entries) · causal r2 · q2–q3
Currency · newest study 2007 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Messages in theme 2 reflect a significantly lower and messages in theme 3 a significantly higher level of knowledge construction than theme 1. → De Wever 2007 q3 i? Messages in theme 4 do not differ significantly in knowledge construction level from theme 1. → De Wever 2007 (2) q2 i? A post hoc analysis adding self-rated task complexity found no significant differences between consecutive themes except a significantly higher level in the third theme. → De Wever 2007 (3)

Evidence¶

De Wever 2007¶

De Wever, B., Van Keer, H., Schellens, T., & Valcke, M. (2007). Applying multilevel modelling to content analysis data: Methodological issues in the study of role assignment in asynchronous discussion groups. Learning and Instruction, 17, 436-447. https://doi.org/10.1016/j.learninstruc.2007.04.001

q3 · i? · causal · r2

Compound symmetry model (model B) contrasting themes 2–4 with theme 1 across the four discussion themes; the model fit better than the four-level null model (χ² = 145.036, df = 3, p < .001).

"messages in theme 2 reflect a significantly lower level of knowledge construction (mean = 1.505 - 0.169 = 1.336, χ² = 15.738, df = 1, p < .001), while messages in theme 3 reflect a significantly higher level of knowledge constructio n (mean = 1.505 + 0.393 = 1.898, χ² = 94.939, df = 1, p < .001)."

De Wever 2007 (2)¶

De Wever, B., Van Keer, H., Schellens, T., & Valcke, M. (2007). Applying multilevel modelling to content analysis data: Methodological issues in the study of role assignment in asynchronous discussion groups. Learning and Instruction, 17, 436-447. https://doi.org/10.1016/j.learninstruc.2007.04.001

q3 · i? · causal · r2

Same compound symmetry model (model B): the theme 4 contrast with the theme 1 intercept of 1.505 was not significant, so the expected gradual learning effect across themes was not supported.

"the mean level of knowledge construction in theme 4 does not differ significantly from this intercept (mean = 1.505 + 0.033 = 1.538, χ² = 0.605, df = 1, p = .437)."

De Wever 2007 (3)¶

De Wever, B., Van Keer, H., Schellens, T., & Valcke, M. (2007). Applying multilevel modelling to content analysis data: Methodological issues in the study of role assignment in asynchronous discussion groups. Learning and Instruction, 17, 436-447. https://doi.org/10.1016/j.learninstruc.2007.04.001

q2 · i? · causal · r2

Post hoc analysis in which students rated the difficulty of each assignment and the self-reported complexity rates were added to the model; the article notes this analysis was not the scope of the study and is not discussed in detail.

"Based on the finding that, except for a significantly higher level in the third discussion, no significan t differences in levels of knowledge construction are revealed when adding complexity to the model, it can be argued that the significant decrease in levels of knowledge constru ction in the second discussion theme can be attributed to a perceived high level of complexity in this assignment."

Discussion¶

Related Claims¶

• In knowledge-construction content analysis data from discussion groups, the largest share of variance lies at the message level, with only small between-group and between-student variance. — related
• Messages mentioning or discussing theory, containing minor or extensive summaries, or including content moderating reflect significantly higher levels of knowledge construction. — related