No direct test of this hypothesis appears in the literature.
It is possible that male general cognitive performance plays an important role in sexual attractiveness, but there has been no direct test of this hypothesis.
These results show that the models developed are reliable enough and, if there is no direct test result, these models can be used in engineering projects.
There is no direct test for Alzheimer's, or for the risk of developing it, in the way that, say, a blood sugar test can be used to assess whether someone has diabetes or prediabetes (a vulnerability to getting diabetes).
It has been hypothesized that mindfulness training (MT) provides one path for gaining control over such top-down influences; yet, there have been no direct tests of this hypothesis.
Einstein's General Relativity still needed to work on all scales, from local, Solar System-based tests up to cosmic ones, but there were no direct tests of some of its greatest, strong-field predictions.
These studies provided circumstantial evidence linking Rad21 cleavage at centromeres to centromere separation, but provided no direct test of whether this cleavage is a prerequisite for anaphase initiation or centromere separation.
However, with the exception of one recent study which looked at autism and psychosis [12], MRI studies have focused on either ASD or schizophrenia exclusively, and there has been no direct test of brain structural similarities in these conditions.
However, we know of no direct tests for such an effect in Caenorhabditis.
Likewise, Verbeke et al. (2013) describe a gene prioritization method based on local networks that they "assume" reduces the effect of hubs, but provide no direct test.
