Keywords: Experiments, charitable contributions, methodology.
(1) | (2) | (3) | (4) | (5) |
Problem | Endowment | Condition | Hold | Pass |
(for myself) | (to charity) | |||
1 | $8 | For every $1 you pass, the Charity will receive $1. | ||
2 | $8 | For every $1 you pass, the Charity will receive $2: your $1 and a matching $1 provided by the experimenter. | ||
3 | $8 | For every $1 you pass, the Charity will receive $1, and, the experimenter will refund to you $.50. |
(1) | (2) | (3) | (4) | (5) |
Problem | Maximum possible | Condition | Dollars in MPC | Dollars in MPC |
contribution (MPC) | to pass to the | to hold for | ||
charity | conversion to | |||
your cash | ||||
account | ||||
1 | $8 | No subsidy. Each $1 of the MPC represents $1 you donate to the charity from your cash account. Cash Account: $8 | ||
2 | $16 | 100% Matching Subsidy: Each $1 of the MPC consists of $.50 you donate from your cash account and a $.50 matching contribution provided by the experimenter. Cash Account: $8 | ||
3 | $16 | 50% Refund Subsidy. Each $1 of the MPC consists of $1 you donate from your cash account, but with $.50 of this donation refunded back to your cash account by the experimenter. Cash Account: $8 |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | |
Mean CR (s.d.) | t (matched pairs tests) | |||||||
(lr)4-6 (lr)7-9 | Price of $1 | No | ||||||
Endowment | contribution | subsidy | Match | Rebate | M v. NS | R v. NS | M v. R | |
(a) | $12 | $1.00 | 0.38 | |||||
(0.20) | ||||||||
(b) | $8 | $1.00 | 0.39 | |||||
(0.23) | ||||||||
(a1) | $12 | $0.67 | 0.53 | 0.39 | 5.09 | 0.30 | 5.15 | |
(0.30) | (0.23) | |||||||
(a2) | $8 | $0.67 | 0.63 | 0.41 | 6.55 | 0.96 | 8.60 | |
(0.31) | (0.23) | |||||||
(b1) | $12 | $0.50 | 0.82 | 0.44 | 6.72 | 2.03 | 7.97 | |
(0.46) | (0.23) | |||||||
(b2) | $8 | $0.50 | 0.91 | 0.42 | 6.21 | 1.18 | 7.35 | |
(0.57) | (0.19) | |||||||
(c) | $12 | $1.00 | 0.49 | |||||
(0.35) | ||||||||
(d) | $8 | $1.00 | 0.49 | |||||
(0.34) | ||||||||
(c1) | $12 | $0.67 | 0.77 | 0.79 | 5.74 | 7.72 | -0.85 | |
(0.46) | (0.46) | |||||||
(c2) | $8 | $0.67 | 0.80 | 0.83 | 7.73 | 9.26 | -0.67 | |
(0.47) | (0.45) | |||||||
(d1) | $12 | $0.50 | 1.10 | 1.16 | 10.61 | 10.59 | -1.28 | |
(0.60) | (0.57) | |||||||
(d2) | $8 | $0.50 | 1.14 | 1.13 | 10.80 | 9.82 | -0.27 | |
(0.56) | (0.62) |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | |
Mean CR (s.d.) | t (matched pairs tests) | |||||||
(lr)4-6 (lr)7-9 | Price of $1 | No | ||||||
Endowment | contribution | subsidy | Match | Rebate | M v. NS | R v. NS | M v. R | |
(a) | $12 | $1.00 | 0.38 | |||||
(0.20) | ||||||||
(b) | $8 | $1.00 | 0.39 | |||||
(0.23) | ||||||||
(a1) | $12 | $0.67 | 0.35 | 0.39 | -1.67 | 0.29 | -1.99 | |
(0.20) | (0.23) | |||||||
(a2) | $8 | $0.67 | 0.46 | 0.42 | 1.91 | 0.96 | 0.28 | |
(0.29) | (0.19) | |||||||
(b1) | $12 | $0.50 | 0.41 | 0.44 | 0.73 | 2.03 | -0.87 | |
(0.23) | (0.23) | |||||||
(b2) | $8 | $0.50 | 0.42 | 0.41 | 1.50 | 1.18 | 0.86 | |
(0.20) | (0.23) | |||||||
(c) | $12 | $1.00 | 0.49 | |||||
(0.35) | ||||||||
(d) | $8 | $1.00 | 0.49 | |||||
(0.34) | ||||||||
(c1) | $12 | $0.67 | 0.50 | 0.53 | 0.31 | 1.14 | -1.08 | |
(0.30) | (0.31) | |||||||
(c2) | $8 | $0.67 | 0.53 | 0.56 | 1.31 | 2.51 | -0.83 | |
(0.32) | (0.30) | |||||||
(d1) | $12 | $0.50 | 0.55 | 0.58 | 1.49 | 2.19 | -1.48 | |
(0.30) | (0.29) | |||||||
(d2) | $8 | $0.50 | 0.56 | 0.56 | 1.86 | 1.93 | -0.03 | |
(0.29) | (0.31) | |||||||