Word: twins
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Dates: during 1970-1979
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...which our shared humanity leaks. Yet it is a disconcerting thought that grandparents are alive today who were not born when World War II broke out. Since it ended, Hitler's life has furnished material for a thousand historical theses. But of late it has moved into the twin fields of memoir and entertainment. Since Albert Speer's Inside the Third Reich was published in 1970, one might suppose that everyone who had anything to do with the Führer, from general to cook, had been signed up for paperback. Five new volumes of Hitleriana have recently...
...largest studies, however, over half the twins were reared by relatives. For example, "The paternal aunts decided to take one twin each and they have brought them up amicably living next-door to one another..." Another researcher claimed that "his" twins were placed randomly, but his own later data contradict...
Kamin has demonstrated other problems with the twin studies, including haphazard testing procedures, failure to control for age and sex, and selective rejection of unfavorable data. Finally, the technique of analysis of variance depends on the dubious assumption that environment and heredity act independently upon...
...lags behind European consortiums in building two other types of aircraft that could well become workhorse transports by the latter half of the decade. One is a twin-engine wide-body jet for short-to medium-range hauls. The 300-passenger A-300B airbus, which is being built by a five-nation European consortium, will be the first such plane on the market; it is scheduled for commercial service next March. The other type is a STOL (for short takeoff and landing) plane for brief hops between urban airports. France's Dassault-Brequet Mercure craft should be providing STOL...
...badly. The aerospace industry for years has generated a bigger net export balance than any other manufacturing business. But a trade analyst in the Commerce Department estimates that the aerospace balance of payments "could become negative as early as 1976 and, if U.S. airlines go abroad to buy their twin-engine wide-bodies, STOLs and supersonics, could grow to an unfavorable total of $4.5 billion annually by 1985." Whether the U.S. does buy foreign planes depends, of course, on whether they live up to their design promise-something they have often failed...