Instructor body posture shows no direct effects on students' situational interest, but indirect-only mediation effects through perceived enthusiasm¶

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

Subclaims¶

q3 i0 In the preregistered experiment, neither posture dimension nor their interaction significantly affected situational interest directly. → Traulsen 2024 q3 i? The vertical posture dimension affected situational interest indirectly through perceived enthusiasm, with no total effect. → 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 situational interest (α = .87) found no significant main or interaction effects (all partial η2 ≤ .009), and contrast comparisons showed no significant group differences.

"Our analyses revealed no significant treatment influences on situational interest for the vertical dimension, F (1, 430) = 3.696, p = .055, partial η2 = .009, the horizontal dimension, F (1, 430) = 0.988, p = .321, partial η2 = .002, and the interaction of both dimensions, F (1, 430) = 2.367, p = .125, partial η2 = .005."

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 · i? · causal · r3

Bootstrapped mediation analysis (PROCESS, 5000 iterations) in the preregistered experiment: no total effect (B = 0.167, p = .053), but a significant indirect effect ab = 0.118, 95%-CI [0.028, 0.213] through perceived enthusiasm; no standardised effect size is printed.

"Thus, while the predicted total effect was not found, the effect of the experimental variations on the vertical dimension affected students' interests indirectly mediated by perceived enthusiasm."

Discussion¶

Learner Variables¶

• Interest — outcome: instruction changes it

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 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
• Student-perceived teacher enthusiasm mediates the relationship between teacher enjoyment and student enjoyment — related