[IPAC-List] Speed vs Power Tests

Winfred Arthur, Jr. w-arthur at tamu.edu
Tue May 31 14:32:45 EDT 2016

Joel, i think it would have to be a function of the construct assessed, 
right?  so, if by "To what extent do speed and power tests measure the 
same constructs?" you mean the _*same test*_ administered under speeded 
and power conditions, then the answer would have to be "no" b/c 
additional variance, maybe construct-relevant or construct-irrelevant 
has been introduced into the test scores.  consequently, one would 
expect the convergence b/n the two sets of scores to be low

and "Do speed tests add validity over power tests?" => again, it will 
seem the answer would depend on the constructs assessed by the two 
tests.  thus, for example, tests of processing speed and reaction time, 
are by definition speeded tests; whereas for example tests of fluid 
intelligence (e.g., the Ravens) and declarative knowledge are typically 
better conceptualized as being closer to the power end of the continuum.

hope this helpful?

- winfred

On 5/31/2016 12:34 PM, Joel Wiesen wrote:
> What is the current thinking on these questions?
> To what extent do speed and power tests measure the same constructs?
> Do speed tests add validity over power tests?
> Thx
> Joel

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