表面效度.ppt

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1、Face Validity 表面效度表面效度 A test is said to have face validity if it looks as if it measures what it is supposed to measure.(to look valid)E.g.:to measure pronunciation ability,not to speak,lack face validity.Face validity refers to the tests surface credibility or public acceptability,and is frequentl

2、y dismissed by testers as being unscientific and irrelevant.Face validity involves an intuitive judgement about the tests content by people whose judgement is not necessarily expert.the degree to which a test appears to measure the knowledge or abilities it claims to measure,based on the subjective

3、judgement of an observer.(测试中测试中)根据观察者的主观判断，测试达到预先设想的衡根据观察者的主观判断，测试达到预先设想的衡量知识或能力的程度。量知识或能力的程度。朗文语言教学及应用语言学词典朗文语言教学及应用语言学词典 Face validity is hardly a scientific concept,yet it is very important.tests that do not appear to be valid to users may not be taken seriously for their given purpose.if test takers consider a test to be face valid,we believe that they are more likely to perform to the best of their ability on that test and to respond appropriately to items.(Face validity will affect the response validity of the test.)