Vouchers |
5.1 | Mean | 2.45 | 2.59 | 3.01 | 2.98 | 2.83 | 2.62 | 2.58 | 2.92 |
SD | 1.63 | 1.55 | 1.68 | 1.69 | 1.69 | 1.62 | 1.59 | 1.58 |
Cash |
5.2 | Mean | 4.33 | 3.69 | 4.21 | 4.16 | 4.14 | 3.96 | 3.43 | 4.00 |
SD | 1.23 | 1.70 | 1.45 | 1.42 | 1.49 | 1.66 | 1.82 | 1.56 |
Small payment (eg, £6) |
5.3 | Mean | 3.80 | 3.55 | 3.94 | 4.20 | 3.73 | 3.93 | 3.33 | 3.52 |
SD | 1.62 | 1.63 | 1.62 | 1.37 | 1.69 | 1.54 | 1.69 | 1.77 |
Large payment (eg, £60) |
5.4 | Mean | 4.33 | 3.96 | 4.58 | 4.51 | 4.40 | 4.31 | 3.73 | 4.28 |
SD | 1.37 | 1.59 | 1.12 | 1.15 | 1.29 | 1.35 | 1.71 | 1.48 |
Expenses |
5.5 | Mean | 3.09 | 2.66 | 2.57 | 2.68 | 2.38 | 2.80 | 2.37 | 2.91 |
SD | 1.64 | 1.56 | 1.65 | 1.61 | 1.53 | 1.67 | 1.37 | 1.79 |
Extra reward |
5.6 | Mean | 4.36 | 3.79 | 4.53 | 4.34 | 4.18 | 4.07 | 3.84 | 4.14 |
SD | 1.29 | 1.56 | 1.09 | 1.12 | 1.44 | 1.49 | 1.63 | 1.38 |
Targeted |
5.7 | Mean | 3.25 | 3.65 | 3.85 | 3.82 | 3.79 | 3.62 | 3.94 | 3.52 |
SD | 1.76 | 1.58 | 1.56 | 1.50 | 1.59 | 1.58 | 1.48 | 1.71 |
For all |
5.8 | Mean | 3.75 | 3.11 | 3.85 | 3.95 | 3.53 | 3.27 | 2.89 | 3.63 |
SD | 1.60 | 1.81 | 1.67 | 1.51 | 1.80 | 1.88 | 1.81 | 1.71 |
Payment every time (eg, £6) |
5.9 | Mean | 4.27 | 3.58 | 3.99 | 4.03 | 3.78 | 3.95 | 3.67 | 3.53 |
SD | 1.27 | 1.62 | 1.58 | 1.44 | 1.68 | 1.57 | 1.61 | 1.70 |
Prize draw (eg, £6000) |
5.10 | Mean | 4.55 | 3.65 | 4.24 | 4.16 | 4.28 | 4.11 | 3.40 | 3.87 |
SD | .69 | 1.71 | 1.36 | 1.28 | 1.37 | 1.52 | 1.79 | 1.68 |