Instructor body posture shows no significant main or interaction effects on students' motivation, though pairwise contrasts favour conditions over slumped/closed¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r3 · q3 · i0–i1
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i0 In the preregistered experiment, motivation was not significantly affected by the vertical dimension, the horizontal dimension, or their interaction. → Traulsen 2024 q3 i1 Pairwise comparisons showed the slumped/closed condition differed significantly from the other conditions on motivation, with small effect sizes. → Traulsen 2024 (2)

Evidence¶

Traulsen 2024¶

Traulsen, S. J., & Zander, L. (2024). Straighten your back, open your arms! Effects of instructor's body postures in educational videos on students' interest and motivation. Learning and Instruction. https://doi.org/10.1016/j.learninstruc.2024.101959

q3 · i0 · causal · r3

Preregistered experiment with 434 students; 2×2 ANOVAs on motivation (SALES questionnaire, α = .92) found no significant main or interaction effects (all partial η2 ≤ .009).

"The same was found for motivation, which was neither significantly affected by variations of the vertical dimension, F (1, 430) = 2.292, p = .131, partial η2 = .005, the horizontal dimension, F (1, 430) = 3.184, p = .075, partial η2 = .007, and the interaction of both dimensions, F (1, 430) = 3.761, p = .053, partial η2 = .009."

Traulsen 2024 (2)¶

Traulsen, S. J., & Zander, L. (2024). Straighten your back, open your arms! Effects of instructor's body postures in educational videos on students' interest and motivation. Learning and Instruction. https://doi.org/10.1016/j.learninstruc.2024.101959

q3 · i1 · causal · r3

Pairwise contrasts in the preregistered experiment showed each of the three other conditions differed significantly from slumped/closed on motivation, with small effects (d = 0.328, d = 0.315, d = 0.359).

"Yet, pairwise comparisons showed that the groups upright/open vs. slumped/closed, t (430) = 2.349, p = .039, d = 0.328, upright/closed vs. slumped/closed, t (430) = 2.450, p = .039, d = 0.315, and slumped/open vs. slumped/closed, t (430) = 2.546, p = .039, d = 0.359, differed significantly"

Discussion¶

Related Claims¶

• An instructor's upright versus slumped and open versus closed body posture in an educational video affects students' perceived instructor enthusiasm on both dimensions — related
• Instructor body posture affects students' liking of the instructor on both dimensions and their interaction, mainly driven by the slumped/closed condition — related
• Students' respect for the instructor is affected by the horizontal posture dimension but not the vertical dimension, with pairwise differences no longer significant after correction — related
• Instructor body posture shows no direct effects on students' situational interest, but indirect-only mediation effects through perceived enthusiasm — related
• Instructor body posture affects students' perceived instructor communion on both the vertical and the horizontal dimension — related
• Instructor body posture affects students' perceived instructor agency, mainly through the vertical dimension — related