Instantaneous observations

The method of the instantaneous observations is a technique based on the elementary Statistiques. It is used in the Industrie to measure the performances of the machines or the personnel.

This method, invented by Ralph Mosser Barnes and published in 1938, makes it possible to evaluate operational times in the Atelier S of Production, without presenting the disadvantages of the timing, very badly perceived by the workmen. It comes in continuity from the methods of Taylorisation of work, and the methods of definition of standard times (MTS).

It is a question of determining the frequency of appearance of a phenomenon by spaced observations in a random way.

The method of the instantaneous observations is used in:

- the evaluation of allocated times, the judgment of the paces,

- the opinion polls,

- the evaluation of the queues.

Its equivalent in English is “ Work Sampling ” in German: “ Multimoment-Studie ”. The denominations in the other languages are used in the studies concerning the weather phenomena, geophysics, where the use, in particular of multimoment , seems preferred with other names having a strong connotation of Productivisme.

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