Table 1 Summary table of experimental results of each study
Study | Scenario | Condition | Mean | SD | n | Cohen’s d and 95% CI |
1a | Wechat moments | helpers | 5.55 | 0.82 | 99 | −0.41, [−0.70, −0.13] |
bystanders | 5.88 | 0.80 | 100 |
1b | Wechat moments | helpers | 4.94 | 1.04 | 69 | −0.48, [−0.82, −0.14] |
bystanders | 5.43 | 0.97 | 75 |
1c | Wechat moments | helpers (conspicuous) | 5.28 | 1.17 | 100 | −0.76, [−1.08, −0.51] |
bystanders (conspicuous) | 6.12 | 0.64 | 100 |
2 | microblogs and mementos | helpers | 5.41 | 0.95 | 70 | −0.46, [−0.80, −0.12] |
bystanders | 5.80 | 0.73 | 70 |
3 | the official website of volunteer activities | helpers | 4.74 | 0.86 | 70 | −0.53, [−0.82, −0.19] |
bystanders | 5.24 | 1.01 | 70 |
4a | mention verbally | helpers | 5.14 | 1.37 | 70 | −0.53, [−0.87, −0.19] |
bystanders | 5.82 | 1.20 | 70 |
4b | Wechat moments | helpers | 5.75 | 0.95 | 100 | −0.50, [−0.78, −0.21] |
bystanders | 6.14 | 0.56 | 99 |