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​Describe the two forms of the proxy-pretest design.

​Describe the two forms of the proxy-pretest design.

Math   Statistics-And-Probability   
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Answer #1

The two forms are:

(i) Recollection Proxy Pretest design

(ii) Archived Proxy Pretest design

In the Recollection Proxy Pretest design, the subject is asked to recall or imagine the previous value of the variable being assessed, such as how they felt about an issue beforehand.

In the Archived Proxy Pretest design, existing records are examined, such as previous ability test results or qualifications.

In design notation, this might be written as (with the proxy pre-test parenthesized):

R (O) X O
R (O) O
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