[QTI] QTI multiple response question with empty answer

[Bart Nagel]

At 2009-11-25 17:38:48 +0000, Jon Hare wrote:
> Of course QTI can do this :-)
>
> Your 3rd example is almost correct (no need to specify  
> <correctResponse>) - you just need to change the scoring criteria.  
> Perhaps something that checks the number of responses is 0? Try  
> replacing the <match>...</match> clause in <responseProcessing> with  
> something like (untested):
>
> <equal>
> 	<containerSize>
> 		<variable identifier="RESPONSE"/>
> 	</containerSize>
> 	<baseValue baseType="integer">0</baseValue>
> </equal>

Thanks, Jon, that did the trick. Just had to add the required 
toleranceMode="exact" attribute and it's all good.

--bart
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