[IPAC-List] Threatening a Penalty for Guessing
Winfred Arthur, Jr.
w-arthur at neo.tamu.edu
Tue Apr 27 22:43:17 EDT 2010
no, Joel, sorry for being unclear but i did not mean to suggest or imply
that it is standard practice to correct both speeded and non-speeded
tests for guessing/accuracy. however, to echo Dennis' point, we do not
correct our knowledge tests for guessing -- this is primarily b/c there
is not a strong conceptual case or basis for doing so. [although, i can
envisage some domains in which errors and lack of knowledge might be so
dangerous that you might want to penalize test takers for getting an
answer wrong!! :) ]
anyway, if you are interested in some reading on this, you might want to
look at the "scoring of information-processing tests" section (pp.
60-61) of:
Arthur, W. Jr., Doverspike, D., & Bell, S. T. (2004). Information
processing tests. In M. Hersen, & J. C. Thomas (Eds.), /Comprehensive
Handbook of Psychological Assessment: Volume 4, Industrial and
Organizational Assessment/ (pp. 56-74). NY: John Wiley & Sons, Inc.
it discusses the different ways in which tests (like your clerical speed
test?) could be scored, namely, (1) # of correct responses [accuracy],
(2) response time [speed], or (3) some weighted composite of accuracy
and speed using specified algorithms.
- winfred
On 4/27/2010 11:13 AM, Joel Wiesen wrote:
> Thanks for your thoughtful comments, Winfred.
>
> Do I understand you correctly as saying it is standard practice to
> correct both speeded and non-speeded test for guessing, but that you
> do not do so for your (non-speeded) knowledge tests?
>
> If so, why do you not correct for guessing?
>
> Thx.
>
> Joel
>
>
>
> - -
> Joel P. Wiesen, Ph.D., Director
> Applied Personnel Research
> 62 Candlewood Road
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> Winfred Arthur, Jr. wrote:
>> Joel, some general thoughts are embedded below:
>>
>> On 4/27/2010 8:19 AM, Joel Wiesen wrote:
>>> If a test's instructions say "you may be penalized for questions you
>>> mark incorrectly" and then the grading does not correct for guessing,
>>> what might the effect be?
>> well, my first thought is that the use of "may" makes this
>> problematic. it shld state explicitly whether one is going to do so
>> or not. "may" without specifying the conditions under which this
>> will or will not be invoked seems to me to be a recipe for . . .
>> well, problems!
>>
>> and whereas i have not seen any empirical rsch or data on this, the
>> college board uses this instruction set for some sections of the SAT
>> [they do not use "may"; they use "will"] and it is my impression that
>> students are more likely to leave these items blank than guess when
>> they do not know the answer.
>>
>>>
>>> Has anyone had practical experience with such instructions? Do test
>>> takers pay attention to such instructions?
>> not personally. indeed to the contrary, i use an instruction set
>> that states that there is no penalty for guessing and so it is in
>> one's best interest to guess if one does not know the answer.
>> subsequently, i rarely get any non-responses. of course, these are
>> knowledge tests.
>>>
>>> Is there research on this type of ambiguous ("may be penalized")
>>> test instruction?
>>>
>> not that i am aware of; but then i have not done a lit search either.
>>> (This particular instruction was used on a speeded (clerical speed)
>>> portion of a longer test for a craft type job.)
>> for what it is worth, it is common, if not stand practice to correct
>> these types of tests for accuracy as well.
>>
>> hope this is somewhat useful.
>>
>> thanks.
>>
>> - winfred
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