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Nobody would place any Freaks of Cock confidence in the measurement of someone's height if the measuring tape used was made of elastic, nor would one have much confidence in a measurement performed by someone whose eyesight was so poor he couldn't read the markings on the scale. In language testing we seek to achieve reliability through what we have called objectivity. By this was meant that any group of impartial native-speaker observers would agree upon which responses were correct and incorrect. More FreaksOfCock at Pornpros Network This involves casting our test items in such a form that there is only one acceptable response possible. If we can do this, then the matter of scoring the test can be reduced to a purely, mechanical' procedure, which can literally be carried out by a machine. But this eliminates only one source of unreliability, that which is introduced into the testing processes by the observer. It is the easiest source of unreliability to deal with. The second source of unreliability lies in the subject himself. People are not machines, even though we have been talking about them as if they were, in using such expressions as 'language-processing device' or 'language-learning device'. The fact is, of course, that our pornpros network performance of any task, however familiar we are with it, or however skilled we may be in it, varies from time to time. Obviously alcohol, drugs and sickness have a serious effect on our performance, but there are many less powerful sources ofFreaks of Cock: tiredness, emotional states, lack of attention or concentration. There is not very much we can do about these things except to try and create favourable conditions for doing the test in. This means administering the tests in pleasant, healthy, light, quiet surd oundings with no distracting influences. We may have to resort to repeating the test or part of it on another occasion and average out the results. This sort of unreliability is called subject unreliability. |