| Statement . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | Mean . | SD . |
|---|---|---|---|---|---|---|---|---|---|
| The study was designed in collaboration with farmers. | 9% | 5% | 9% | 26% | 18% | 15% | 19% | 4.6 | 1.8 |
| The results are used for policy-making. | 33% | 13% | 10% | 21% | 10% | 6% | 8% | 3.1 | 2 |
| A summary of the results is sent to all participants. | 10% | 5% | 6% | 19% | 16% | 18% | 25% | 4.8 | 1.9 |
| Every participant receives a small payment for their participation. | 12% | 6% | 7% | 28% | 18% | 13% | 17% | 4.4 | 1.9 |
| All participants receive different payments, where the size of the payment solely depends on the participant's own decisions. | 32% | 13% | 8% | 23% | 10% | 8% | 6% | 3.1 | 1.9 |
| All participants receive different payments, where the size of the payment depends on the participant's own decisions and the decisions of other participants. | 32% | 13% | 14% | 23% | 8% | 7% | 4% | 3 | 1.8 |
| Only some randomly selected participants receive a payment for participation, but this payment is larger. | 50% | 18% | 9% | 16% | 4% | 2% | 3% | 2.2 | 1.5 |
| The experimenter gives the participants false information about the contributions of other participants to test how this changes their own contributions. | 45% | 18% | 10% | 18% | 4% | 3% | 3% | 2.4 | 1.6 |
| Statement . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | Mean . | SD . |
|---|---|---|---|---|---|---|---|---|---|
| The study was designed in collaboration with farmers. | 9% | 5% | 9% | 26% | 18% | 15% | 19% | 4.6 | 1.8 |
| The results are used for policy-making. | 33% | 13% | 10% | 21% | 10% | 6% | 8% | 3.1 | 2 |
| A summary of the results is sent to all participants. | 10% | 5% | 6% | 19% | 16% | 18% | 25% | 4.8 | 1.9 |
| Every participant receives a small payment for their participation. | 12% | 6% | 7% | 28% | 18% | 13% | 17% | 4.4 | 1.9 |
| All participants receive different payments, where the size of the payment solely depends on the participant's own decisions. | 32% | 13% | 8% | 23% | 10% | 8% | 6% | 3.1 | 1.9 |
| All participants receive different payments, where the size of the payment depends on the participant's own decisions and the decisions of other participants. | 32% | 13% | 14% | 23% | 8% | 7% | 4% | 3 | 1.8 |
| Only some randomly selected participants receive a payment for participation, but this payment is larger. | 50% | 18% | 9% | 16% | 4% | 2% | 3% | 2.2 | 1.5 |
| The experimenter gives the participants false information about the contributions of other participants to test how this changes their own contributions. | 45% | 18% | 10% | 18% | 4% | 3% | 3% | 2.4 | 1.6 |
Note: Columns 1–7 represent the answer categories per statement from 1 = “Much less likely to participate” to 7 = “Much more likely to participate”; the last two columns show means and standard deviations by statement.
| Statement . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | Mean . | SD . |
|---|---|---|---|---|---|---|---|---|---|
| The study was designed in collaboration with farmers. | 9% | 5% | 9% | 26% | 18% | 15% | 19% | 4.6 | 1.8 |
| The results are used for policy-making. | 33% | 13% | 10% | 21% | 10% | 6% | 8% | 3.1 | 2 |
| A summary of the results is sent to all participants. | 10% | 5% | 6% | 19% | 16% | 18% | 25% | 4.8 | 1.9 |
| Every participant receives a small payment for their participation. | 12% | 6% | 7% | 28% | 18% | 13% | 17% | 4.4 | 1.9 |
| All participants receive different payments, where the size of the payment solely depends on the participant's own decisions. | 32% | 13% | 8% | 23% | 10% | 8% | 6% | 3.1 | 1.9 |
| All participants receive different payments, where the size of the payment depends on the participant's own decisions and the decisions of other participants. | 32% | 13% | 14% | 23% | 8% | 7% | 4% | 3 | 1.8 |
| Only some randomly selected participants receive a payment for participation, but this payment is larger. | 50% | 18% | 9% | 16% | 4% | 2% | 3% | 2.2 | 1.5 |
| The experimenter gives the participants false information about the contributions of other participants to test how this changes their own contributions. | 45% | 18% | 10% | 18% | 4% | 3% | 3% | 2.4 | 1.6 |
| Statement . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | Mean . | SD . |
|---|---|---|---|---|---|---|---|---|---|
| The study was designed in collaboration with farmers. | 9% | 5% | 9% | 26% | 18% | 15% | 19% | 4.6 | 1.8 |
| The results are used for policy-making. | 33% | 13% | 10% | 21% | 10% | 6% | 8% | 3.1 | 2 |
| A summary of the results is sent to all participants. | 10% | 5% | 6% | 19% | 16% | 18% | 25% | 4.8 | 1.9 |
| Every participant receives a small payment for their participation. | 12% | 6% | 7% | 28% | 18% | 13% | 17% | 4.4 | 1.9 |
| All participants receive different payments, where the size of the payment solely depends on the participant's own decisions. | 32% | 13% | 8% | 23% | 10% | 8% | 6% | 3.1 | 1.9 |
| All participants receive different payments, where the size of the payment depends on the participant's own decisions and the decisions of other participants. | 32% | 13% | 14% | 23% | 8% | 7% | 4% | 3 | 1.8 |
| Only some randomly selected participants receive a payment for participation, but this payment is larger. | 50% | 18% | 9% | 16% | 4% | 2% | 3% | 2.2 | 1.5 |
| The experimenter gives the participants false information about the contributions of other participants to test how this changes their own contributions. | 45% | 18% | 10% | 18% | 4% | 3% | 3% | 2.4 | 1.6 |
Note: Columns 1–7 represent the answer categories per statement from 1 = “Much less likely to participate” to 7 = “Much more likely to participate”; the last two columns show means and standard deviations by statement.
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