Longitudinal studies clarifying state-trait issues are lacking.
And positing that there is some natural cause for the trait at issue is not helpful as a theory, other than to make a basic distinction between natural selection and supernatural theories of evolution.
We note that there is a possibility that data quality is correlated with sociodemographic traits, an issue which might result in the final study population differing from the student population as a whole.
But when we examine their attempt to sidestep circularity or tautology by appealing to recursivity and filter explanations we see that filter explanations, as a category, a meta-theory, reduce to a simple posit that there is some natural cause (the filter) that led to the traits at issue.
Still, fetal DNA tests for sex determination and other traits present "issues that I don't think many general obstetricians are ready to deal with," Dr. Egan said.
In many ways, the contest has become a battle between character traits and issues, as Mr. Kerry tries to turn the campaign into a referendum on Mr. Bush's record and proposals for the future, while Mr. Bush relentlessly seeks to paint his opponent as intellectually inconsistent and too weak to protect Americans in a time of terrorism.
Clark said that he supported the N.C.A.A. legislation but that the trait was an issue during his free agency this off-season.
As described in the Introduction, breeding for robustness for both milk production and health traits is an issue in dairy cattle.
While the promotional materials for the car promised catlike quickness in traffic, Mr. Kendall, the curator, mentioned a different trait in the fall 2008 issue of the Petersen museum's quarterly publication.
Thus, vegetative propagation systems provide a means to avoid the issue of trait variation, through cloning of the top elite individual genotypes.
