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Table 3 Comparison of experimental conditions (control, non-gamified; and experimental; gamified) in terms of participant attempts for each point in time (TP)

From: Gamification suffers from the novelty effect but benefits from the familiarization effect: Findings from a longitudinal study

  Yuen-Welch test Effect size
TP t(df) p p-adj 95% CI ES 95% CI
1 7.872 (121.11) 0.000 0.000 − 33.123 − 19.811 0.448 0.305 0.596
2 7.781 (130.84) 0.000 0.000 − 22.894 − 13.613 0.443 0.296 0.584
3 0.023 (97.45) 0.982 0.982 − 10.969 10.717 0.033 0.000 0.194
4 0.717 (95.90) 0.475 0.555 − 8.500 3.991 0.061 0.000 0.249
5 1.468 (102.10) 0.145 0.203 − 8.285 1.236 0.100 0.000 0.260
6 3.523 (103.19) 0.001 0.001 − 11.192 − 3.130 0.240 0.070 0.378
7 5.407 (113.15) 0.000 0.000 − 13.916 − 6.453 0.331 0.178 0.467