2 issues central to the construct validity of Kohlberg's organismic 6-stage model of moral judgment development are empirically assessed: (a) stepwise, invariant sequence and (b) irreversibility of ...

Some say that out of all the objects in the universe, the human brain is the most complex. Much of what makes us uniquely human — our emotions, memories, consciousness — stems from this 3-pound organ, ...

Technological, ethical and legal issues have limited the understanding of the early stages of embryonic development in humans, despite its importance in basic developmental biology and reproductive ...

The third coronavirus outbreak in the past 20 years, the SARS-CoV-2 pandemic has caused unprecedented morbidity, mortality, and economic disruption. Safe, effective, and deployable SARS-CoV-2 vaccines ...