Test-retest reliability is therefore threatened. Eg if during a listening test there is suddenly a lot of background noise, the candidates are unlikely to achieve the same results as they would in a silent room. the conditions under which it is taken.
if the same oral interview was marked by two different markers, the result might be quite different because one was concentrating on accuracy while the other gave more credit for fluency. Otherwise, different markers might award/detract marks for different factors, thus threatening mark-remark reliability - ie,g. a subjective test such as an oral interview or a test involving the production of a written text may be unreliable if there are not clearly defined marking criteria which all markers adhere to.Reliability may be threatened by various factors. Two different people, would the result be the same?) 2) Mark-remark reliability (if the test was marked by
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