Reliability and Validity - A Level - Flashcards in A Level and IB Psychology

Created by: Harrisoncp
Created on: 25-03-19 16:37

What is reliability

if a measurement is repeated and the same result is obtained it is described as being reliable

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What are the ways of assessing reliability

Test - retest ( same test is given to same person), inter-observer ( pilot study conducted to check behavioral categories are being applied in the same way, correlation coefficient should exceed +.80 for reliability

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Ways of improving reliability are ...

Rewriting questions on a questionnaire to fixed questions, using the same trained interviewer, use of standardised procedures and behavioral categories shouldn't overlap

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What is validity

whether an observed effect is genuine and represents what is actually ' out there'

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two types of validity are...

Ecological validity ( whether findings can be generalized from one setting to another) and Temporal validity ( findings should be consistent over time)

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How does a control group improve validity

researcher is more confident that any changes to the DV were due to the effect of the IV

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Two other forms of improving validity are

Lie scales and confidentiality control effects of social desirablility bias

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Card 2

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What are the ways of assessing reliability

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Card 3

Front

Ways of improving reliability are ...

Back

Card 4

Front

What is validity

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Card 5

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two types of validity are...

Back

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Reliability and Validity - A Level