An instructor's upright versus slumped and open versus closed body posture in an educational video affects students' perceived instructor enthusiasm on both dimensions¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r3 · q3 · i2 medium
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i2 In the pilot experiment, both the vertical and the horizontal posture dimension significantly affected perceived instructor enthusiasm, with the largest difference between the upright/open and slumped/closed conditions. → Traulsen 2024 q3 i2 In the preregistered experiment, both posture dimensions again significantly affected perceived enthusiasm, with a stronger influence of the horizontal dimension and the lowest enthusiasm in the slumped/closed condition. → 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 · i2 · causal · r3

Pilot online experiment with 194 university students randomly assigned to four posture videos; 2×2 ANOVAs with bootstrapping. The vertical effect had partial η2 = .113 and the horizontal partial η2 = .035, showing "perceived instructor enthusiasm was systematically affected by both dimensions."

"the first analysis showed significant main effects of the vertical dimension, F (1, 190) = 24.19, p < .001, partial η2 = .113, and the horizontal dimension, F (1, 190) = 6.85, p = .010, partial η2 = .035, indicating that perceived instructor enthusiasm was systematically affected by both dimensions."

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 · i2 · causal · r3

Preregistered online experiment with 434 students watching about 1 min of the videos; 2×2 ANOVAs replicated the pilot. The horizontal effect (partial η2 = .073) was stronger than the vertical (partial η2 = .016), "confirming the finding of Experiment 1 that both dimensions impact perceived instructor enthusiasm."

"there were significant effects of the vertical dimension, F (1, 430) = 7.105, p = .008, partial η2 = .016, the horizontal dimension, F (1, 430) = 34.033, p < .001, partial η2 = .073, confirming the finding of Experiment 1 that both dimensions impact perceived instructor enthusiasm."

Discussion¶

Related Claims¶

• Instructor body posture affects students' perceived instructor agency, mainly through the vertical dimension — related
• Instructor body posture affects students' perceived instructor communion on both the vertical and the horizontal dimension — related
• Instructor body posture shows no significant main or interaction effects on students' motivation, though pairwise contrasts favour conditions over slumped/closed — related
• Instructor body posture affects students' liking of the instructor on both dimensions and their interaction, mainly driven by the slumped/closed condition — related
• Instructor body posture shows no direct effects on students' situational interest, but indirect-only mediation effects through perceived enthusiasm — 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