Of the virtual groups, one had no primarily 'consumer' members and the other had two, one of whom made only one contribution – to suggest a topic at the beginning of Phase One – while the other had the highest level of contributions in the group, despite being the only member without a computer, relying on public library access.
Forums can use public markers of status-awards, name recognition-to draw attention to users' high level of contribution, their expertise and knowledge, or their creativity, taste, or style.
For PC1 and PC2, the Finnish Ayrshires and NRF animals group together, likely reflecting the high level of contribution of Finnish Ayrshire to NRF.
Japan is also campaigning for a permanent place, citing its high level of contributions and the need for a democratic free-market Asian voice among the most powerful nations.
A major problem with such schemes is the high level of contributions and taxes needed to finance the minimum income if it is to go to those with jobs as well as to those without them and be sufficient to live on, if only at a minimum level.
In some cases these arrangements have been introduced in the hope of encouraging later retirement, thus modifying the deterioration of the ratio between the employed population and the retired population, which necessitates higher levels of contribution by those still working as the proportion of the pensioned population increases.
Conditional cooperators are thus the source of relatively high levels of contribution in the management of common resources.
Our design and results contribute to explaining the mixed evidence in the literature on partner versus stranger comparisons and allow us to understand under which conditions commitment can be conducive or harmful to achieving and sustaining higher levels of contribution.
The Whitley system was regarded by many as complex and inflexible, constraining the development of new roles and unresponsive to the high levels of contribution being made by experienced clinical staff.
Therefore, in contrast with cases in which incentives crowd-out cooperative behavior, in our experiments obligations and incentives are complementary, jointly supporting high levels of contributions.
