The process of knowledge acquisition which has the strongest truth claim is the research process of natural science, based on testing hypotheses to destruction. But the application of this process to phenomena beyond those for which it was developed, namely, the natural regularities of the physical universe, is problematical. For research into social phenomena there is increasing interest in "a...

An endonuclease was purified from the digestive juice of silkworm larvae, B o m b y x mori. The enzyme hydrolyses both DNA and RNA endolytically with little base specificity, yielding diand trinucleotides terminating in 5’-phosphate. Polynucleotides terminated in 3’ -phosphate gave dinucleosidemonophosphates and trinucleosidediphosphates f rom 5’-end, diand trinucleotides from inside, a n d mon...

Critical thinking comprises the mental processes, strategies, and representations people use to solve problems, make decisions, and learn new concepts. The study of critical thinking combines the educational, philosophical, and psychological traditions of thought. R. Ennis offers a philosophical taxonomy suggesting that critical thinking results from the interaction of a set of dispositions tow...

Leo Kanner,I although not the first to describe this serious and intriguing developmental disorder of early childhood,2 so precisely captured its essential features that the clinical account of his first 11 cases has never been bettered. The salient characteristics he mentioned were an 'extreme autistic aloneness' from the beginning of life, delay and abnormality in language acquisition with ec...