[DMDX] RE: Re: two recent mysteries Also watch for chinese characters (it may not apply in this case) - I
had instances where the text in an item line was in Chinese, but some of
those characters were being interpreted as control characters (such as $
; , etc) with strange results

Chris Letts,
Technical Site Manager,
SECLS Speech & Language Section.

 

>-----Original Message-----
>From: DMDX-owner@psy1.psych.arizona.edu 
>[mailto:DMDX-owner@psy1.psych.arizona.edu] On Behalf Of 
>Jonathan C. Forster
>Sent: 05 December 2005 21:57
>To: DMDX@psy1.psych.arizona.edu
>Subject: [DMDX] Re: two recent mysteries
>
>At 04:16 PM 12/5/2005 -0500, you wrote:
>>I encountered two mysteries with dmdx:
>>Mystery 1: while analysing data, I noticed there is no data for Item 
>>11. I checked the item file, it is there, and there is no 
>problem with 
>>it. I checked the azk file, Item 11 is missing. But I also 
>notice it is 
>>the first item after practice. I moved it to the second item 
>and tested 
>>myself, checked the azk file; now the current first item is missing.
>>Summary: the first item after practice does not have data.
>
>  Perhaps you have some weird feature in the item file where 
>the practice ends as if this was happening regularly we would 
>have seen instances of it before this.  Missing semicolons are 
>a prime suspect as are weird scramble parameters, particularly 
>if combined with missing semi-colons.
>
>
>>Mystery 2: I have 11 Chinese students who showed a 1 ms difference 
>>between two conditions (in ism file, same below); I have 8 Japanese 
>>students who showed a 7 ms difference between the same two conditions 
>>in the same direction (the same experiment). After I combined 
>them into 
>>one azk file, and Analyzed it, the difference was 16 ms in 
>the same direction. Why?
>
>   Who knows.
>
>
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>The problem with people who have no vices is that generally 
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>
>                                              -  Elizabeth Taylor
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