However, the widely held belief that imitation is correlated with high copying fidelity remains unproven and several nonhuman species have traditions over many generations without imitation.
The agenda calls for greater collaboration in identifying outmoded technologies still in widespread use; current technologies that are unproven, ineffective or cannot be cost-justified; and effective technologies currently underutilized.
Sizeable proportions mentioned unproven or ineffective methods (douching 20%; spermicides 16%), three respondents (3%) mentioned sitting in hot water, and two respondents each (2%) mentioned saccharine and medroxyprogesterone.
He prefers to analyse what workers actually did to ' ' organise themselves in opposition to employers and the state, ' ' rather than use abstract and unproven models of false consciousness or exceptionalism.
However, because there is not a direct correlation between the tumor location and the placement of the mastectomy scar, the utility of the scar boost remains unproven [29].
Similar options might be considered for genetic tests of compelling worth and promising, but yet unproven, effectiveness, or uncertain effects.
Screening tests of unproven effectiveness can cause definite harm and are often expensive, especially when performed on large numbers of people.
The stability and reproducibility of these results remains unproven.
