The intervention increased students' elaborated explanations and cumulative and exploratory talk¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q2
Currency · newest study 2026 · checked against its sources 2026-10-20 (automated, 2 of 2 entries) · not reviewed by a person

Subclaims¶

q2 i? The frequency of elaborated explanations was 93% higher among intervention-group students, with very strong Bayesian support (ER = 230; hurdle ER = 5999). → Dammert 2026 q2 i? Cumulative talk occurred 58% more often and exploratory talk 63% more often in the intervention group at posttest, with very strong support (ER = 137) and strong evidence (ER = 166) respectively. → Dammert 2026 (2)

Evidence¶

Dammert 2026¶

Dammert, Y., Gasser, L., & Murphy, P. K. (2026). Effects of a literary intervention on teachers' monologic and dialogic practices and the quality of students' contributions. Instructional Science. https://doi.org/10.1007/s11251-026-09809-z

q2 · i? · causal · r2

Bayesian hurdle-gamma model of elaborated explanations (responses with two reasoning elements) per 10-minute discussion, coded from the 20 pretest and posttest small-group discussions.

"The frequency of EEs was 93% higher among students in the IG than among those in the CG (ER = 230, gamma part). The likelihood of completely omitting elaborated explanations was 92% lower in the IG (hurdle part)."

Dammert 2026 (2)¶

Dammert, Y., Gasser, L., & Murphy, P. K. (2026). Effects of a literary intervention on teachers' monologic and dialogic practices and the quality of students' contributions. Instructional Science. https://doi.org/10.1007/s11251-026-09809-z

q2 · i? · causal · r2

Bayesian hurdle-gamma models of group-level talk. Exploratory talk showed the parallel pattern: students in the IG produced 63% more exploratory talk (ER = 166), and the likelihood of none occurring was 80% lower (ER = 67).

"at posttest, cumulative talk occurred 58% more often in the IG than in the CG among those who engaged in it (gamma part); notably, there was very strong Bayesian support for this difference (ER = 137)."

Discussion¶

Related Claims¶

• A QT-based literary intervention reduced teachers' monologic practices (teacher turns, turn allocation, test questions, evaluation) in small-group discussions — related
• Students in the intervention group asked more authentic questions and used more student-directed turn allocation and reasoning in literary discussions — related
• High teacher mediation is associated with more children talking and higher frequency of both elaborated and restricted talk — related
• Cumulative, disputational, and exploratory talk types together mediated students' enactment of makerspace knowledge practices — related
• Pre-written prompts increase Justifications and Alternative ideas in children's pair-programming talk and shift the role of Simple questions — related
• Some classroom discussion approaches improve text comprehension, but gains are not uniform across approaches and more student talk alone does not produce them — related
• Elaborated coding was associated with higher reading scores among the observed children — related