Deposit? Yes, please! The effect of different modes of assigning reward-and deposit-based financial incentives on effort 293 9 Table 2. Demographic characteristics of the study sample at both sessions with p values for Chisquared tests of independence comparing proportion returning for T1 vs. drop-out. Session T0; n (%) Session T1; n (%) Dropout; n (%) p-value (Session T1 vs Dropout) Assignment arm .320 Nudged assignment 113 (49.6) 81 (47.4) 32 (56.1) Random assignment 115 (50.4) 90 (52.6) 25 (43.9) Sex .645 Male 104 (45.6) 80 (46.8) 24 (42.1) Female 124 (54.4) 91 (53.2) 33 (57.9) Age .537 18-20 81 (35.5) 60 (35.1) 21 (36.8) 21-23 95 (41.7) 69 (40.4) 26 (45.6) 24+ 52 (22.8) 42 (24.6) 10 (17.5) Income .763 less than €5,000 45 (19.7) 34 (19.9) 11 (19.3) €5,000-€7,499 30 (13.2) 23 (13.5) 7 (12.3) €7,500 - €14,999 78 (34.2) 57 (33.5) 21 (36.8) €15,000 - €29,999 34 (14.9) 24 (14.0) 10 (17.5) €30,000 - €44,999 22 (9.6) 17 (9.9) 5 (8.8) €45,000 - €59,999 8 (3.5) 5 (2.9) 3 (5.2) €60,000 - €79,999 3 (1.3) 3 (1.8) 0 (0.0) €80,000 - €99,999 2 (0.9) 2 (1.2) 0 (0.0) Don’t want to share 6 (2.6) 6 (3.5) 0 (0.0) Highest education attained .042 First year 21 (9.2) 11 (6.4) 10 (17.5) Tertiary education (HBO) 6 (2.6) 3 (1.8) 3 (5.3) Bachelor 127 (55.7) 98 (57.3) 29 (50.9) Master 72 (31.6) 58 (33.9) 14 (24.6) PhD 2 (0.9) 1 (0.6) 1 (1.8) Payment condition .907 Low (€8) 67 (29.4) 49 (28.7) 18 (31.6) Medium (€12) 81 (35.5) 61 (35.7) 20 (35.1) High (€20) 80 (35.1) 61 (35.7) 19 (33.3) Incentive type Reward-based 129 (56.6) 100 (58.5 29 (50.9) .781 Deposit-based 99 (43.4) 71 (41.5) 28 (49.1)
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