The phenomenal growth of global pharmaceutical sales and the quest for innovation are driving an unprecedented search for human test subjects, particularly in middle- and low-income countries. Our hope for medical progress increasingly depends on the willingness of the world's poor to participate in clinical drug trials. While these experiments often provide those in need with ...(展开全部)

50,000 years ago - merely a blip in evolutionary time - our Homo sapiens ancestors were competing for existence with several other human species, just as their own precursors had been doing for millions of years. Yet something about our species separated it from the pack, and led to its survival while the rest became extinct. So just what was it that allowed Homo sapiens to bec...(展开全部)

Fifty thousand years ago—merely a blip in evolutionary time—our Homo sapiens ancestors were competing for existence with several other human species, just as their precursors had done for millions of years. Yet something about our species distinguished it from the pack, and ultimately led to its survival while the rest became extinct. Just what was it that allowed Homo sapiens ...(展开全部)

50,000 years ago - merely a blip in evolutionary time - our Homo sapiens ancestors were competing for existence with several other human species, just as their own precursors had been doing for millions of years. Yet something about our species separated it from the pack, and led to its survival while the rest became extinct. So just what was it that allowed Homo sapiens to bec...(展开全部)

Fifty thousand years ago—merely a blip in evolutionary time—our Homo sapiens ancestors were competing for existence with several other human species, just as their precursors had done for millions of years. Yet something about our species distinguished it from the pack, and ultimately led to its survival while the rest became extinct. Just what was it that allowed Homo sapiens ...(展开全部)

This authoritative guide offers guidelines for interviewing children of different ages as well as their parents and teachers and for weaving the resulting data into multimethod assessment and intervention planning. K-12 school psychologists and other practitioners learn specific strategies for assessing school issues, peer relations, emotional difficulties, family situations, a...(展开全部)

This authoritative guide offers guidelines for interviewing children of different ages as well as their parents and teachers and for weaving the resulting data into multimethod assessment and intervention planning. K-12 school psychologists and other practitioners learn specific strategies for assessing school issues, peer relations, emotional difficulties, family situations, a...(展开全部)