Twenty-five years after its initial development, coronary artery calcium (CAC) scanning has become a relatively inexpensive test that has been extensively validated as a potent noninvasive means for assessing the burden of coronary atherosclerosis in asymptomatic individuals. A proportional relationship between the magnitude of CAC abnormality and the frequency of subsequent cardiac events over...

The titular question here “Why is There A World AT ALL, Rather Than Just Nothing?” is a fusion of two successive queries posed by Leibniz in 1697 and 1714. He did so to lay the groundwork for his explanatory theistic answer. But the present paper offers (i) A very unfavorable verdict from my critical scrutiny of the explanatory demand made by Leibniz, and (ii) My argument for the complete failu...

Evidence suggests that children's self-perceptions of their abilities predict their school achievement even after one accounts for their tested cognitive ability (IQ). However, the roles of nature and nurture in the association between school achievement and self-perceived abilities (SPAs), independent of IQ, is unknown. Here we reveal that there are substantial genetic influences on SPAs and t...