The threshold effect, also known as the inch-to-inch effect, means that once a person accepts a trivial request from others, he is likely to accept a larger request in order to avoid cognitive disharmony or to give others a consistent impression. This phenomenon is like climbing the doorsill step by step, so that you can climb the heights more easily and smoothly.
According to the above definition, which of the following does not meet the threshold effect?
A survey shows that 30% of urban residents are willing to donate money to out-of-school children in poor areas, and if people are first asked to sign the proposal to help out-of-school children in poor areas, and then ask them to donate, the number of people willing to donate has increased by 25%