did not reach statistical significancep = 0.1073
For 2024–2025, a similar pattern emerged with pre-exam periods averaging 2.89 ± 1.22 conversations/day versus 0.67 ± 0.13 during regular periods (329.6% increase), though this difference did not reach statistical significance ( t = 1.809, p = 0.1073, Cohen’s d = 1.344).