please answer all questions and explain please thank you

Pilots, controllers, ground crew, cabin crew, dispatchers and ATC controllers, as well as all other workers, are subject to performance degradation as a function of workload (stress). First identified in the early 1900 s, the researchers identified that there was an optimal stress level, where performance was maximum, and stress levels above, or below, the optimum level resulted in poorer operator performance. This is today called the Yerkes-Dodson Law law of effect Hawthorne effect Weber-Fechner Law According to Miller (1956), the capacity and duration of the short term memory (STM) is... 7 items, +/2, for 15 seconds 5 items, +/2, for 17 seconds 9 items, +/3, for 12 seconds 3 items, +/1, for 8 seconds The maximum capacity of the human long term memory (LTM) is... unknown/unlimited limited only by intelligence relative to the expertise of the individual in the area concerned decreased with advancing age When a major accident occurs within the United States rail industry, the event is investigated and a report prepared by the... National Transportation Safety Board Department of Transportation, Railroad Safety Commission Department of the Interior Presidentail Commission including representatives of the various manufacturers involved