What is the validity of a scale?

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Cleo

2019年11月25日

What is the validity of a scale?

What is the validity of a scale?

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Jason Jiang

2020年2月20日

Validity refers to the extent to which a measure adequately represents the underlying construct that it is supposed to measure. Empirical assessment of validity examines how well a given measure relates to one or more external criterion, based on empirical observations. This type of validity is called criterion-related validity, which includes four sub-types: convergent, discriminant, concurrent, and predictive validity.

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Hobbs

2020年2月10日

Is there any way to check the validity of a scale?

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James Kwok

2019年11月25日

You are welcome Cleo!!

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Cleo

2019年11月25日

Thank you so much James!!

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James Kwok

2019年11月25日

Sure. Despite no particular rules, the following are the points you should try to avoid:
• long complex questions
• double negatives
• double-barreled questions
• jargon or abbreviations
• culture-specific terms
• words with double meanings
• leading questions
• emotionally loaded words

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Cleo

2019年11月25日

Can you give any tips about how to design the items of questionnaire?

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James Kwok

2019年11月25日

You are right. There are 3 major types of validity, namely content validity, criterion validity and construct validity.

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Cleo

2019年11月25日

Thx. I heard that there are different types of validity, right? How many of them and what are they?

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James Kwok

2019年11月25日

It shows the extent to which it assesses what it is expected to assess.

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