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Question
The classical clock-watching studies of Mackworth after WW-II 2 hrs [...] critical signals each half-hr at random intervals. After the first half-hour there were significantly more signals missed The human attention span seems to be limited to 30 minutes on a routine job.
Answer
12

Question
The classical clock-watching studies of Mackworth after WW-II 2 hrs [...] critical signals each half-hr at random intervals. After the first half-hour there were significantly more signals missed The human attention span seems to be limited to 30 minutes on a routine job.
Answer
?

Question
The classical clock-watching studies of Mackworth after WW-II 2 hrs [...] critical signals each half-hr at random intervals. After the first half-hour there were significantly more signals missed The human attention span seems to be limited to 30 minutes on a routine job.
Answer
12
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The classical clock-watching studies of Mackworth after WW-II 2 hrs 12 critical signals each half-hr at random intervals. After the first half-hour there were significantly more signals missed The human attention span seems to be limited to 30 minutes on a

Original toplevel document (pdf)

owner: ovsum - (no access) - 2-ERGO-INFERG1.pdf, p27

Summary

statusnot learnedmeasured difficulty37% [default]last interval [days]               
repetition number in this series0memorised on               scheduled repetition               
scheduled repetition interval               last repetition or drill

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