"reduce willingness" is correct and usable in written English.
You can use it when you want to describe a situation in which someone is less willing to do something than they were before. For example, "The long-term effects of the pandemic have greatly reduced her willingness to take risks."
For example, physical impairments may significantly reduce willingness to use public transport unadjusted for these impairments.
On the other hand, the stem cell scenario, which did not reduce willingness to donate in the survey, significantly reduced willingness to donate among political conservatives and those with residual concerns about privacy (Table 3).
These factors are known to reduce willingness to participate in research projects [ 58].
Parenting and other types of caregiving may reduce willingness to trade due to increased altruism and a sense of responsibility for another individual's well-being.
The open field test measures changes in overall locomotion and may indicate states such as depression/anxiety that reduce willingness to explore.
It is a logical hypothesis that certain questions may evoke negative feelings in widows and widowers and, consequently, reduce willingness to participate in bereavement studies.
Many firms, especially those with weaker credit ratings, have simply been frozen out of the market for derivatives by banks' reduced willingness to carry risk.
Perhaps worse, because perfectionism reduces willingness to take risks — one way to minimize the chances of performing less than optimally — "it reduces creativity and innovation," skills that are in huge demand.
Lifestyle diversity and high immigration bring cultural and economic dynamism, but they can erode feelings of mutual obligation, reducing willingness to pay tax and even encouraging a retreat from the public domain.
Older age reduced willingness to donate in four of the seven NWI scenarios: abortion, bio-weapons, evolution, and violence gene.
These falling returns are neither caused by changes in the sample design and reduced willingness to reveal personal incomes in the survey, nor by a declining quality of education.
