Problems with input SPSS data file PreviousNext
Mplus Discussion > Multilevel Data/Complex Sample >
 Eva van de Weijer posted on Monday, July 08, 2013 - 2:10 pm
Hello, I am a new user of Mplus and I have problems reading SPSS data into Mplus.
Mplus gives the following error:

The number of observations is 0. Check your data and format statement.
Data file: Leeuwenspel & cito voor Mplus_zonder StudentID.csv
Invalid symbol in data file:
"101" at record #: 1, field #: 1

The value in the first record at the first field is 101 (a numeric variable), and I don't understand why the error occurs or how I can fix this.

All variables are numeric, point decimal, and variable names do not exceed 8 characters. I have tried both .dat and .csv files.

kind regards, Eva
 Linda K. Muthen posted on Monday, July 08, 2013 - 3:27 pm
Open the data file in the Mplus Editor. You will see the invalid character. Delete it and save the data. This problem seems to have been introduced in the latest version of SPSS.
 Eva van de Weijer posted on Monday, July 08, 2013 - 11:48 pm
Thank you for your quick reply. It worked!
 Takisha McNeill Corbett posted on Monday, February 03, 2014 - 8:09 pm
Can I open an SPSS files .sav in Mplus editor? It doesn't appear as an file format option when I tried your recommendation above. Only .inp and .out are options. Any other suggestions, I am working on my dissertation? Also can Mplus randomly split the data in an SPSS file .sav?

Thanks for your help.

 Linda K. Muthen posted on Tuesday, February 04, 2014 - 9:05 am
You cannot open an SPSS data file in Mplus. You need to create a numeric ASCII file for Mplus to read.

Mplus cannot randomly split the data. You should do that in SPSS before you save the data as a numeric ASCII file.
 Kayla Sedgwick posted on Sunday, February 16, 2014 - 8:26 am

Does anyone know if MPLUS computes mediation under the same assumptions as the famous Barron & Kenny approach? If so, does anyone know the syntax for this?

Thank you!
 Bengt O. Muthen posted on Sunday, February 16, 2014 - 12:44 pm
Chapter 3 of the User's Guide shows mediation modeling. The same assumptions as Baron-Kenny are used.
 Kayla Sedgwick posted on Friday, February 21, 2014 - 8:13 am
Thank you for your reply, I was able to get the code from the User guide. Now I am wanting to test mediation a different way, under the assumptions of Preacher & Hayes (2004, 2008). Is there syntax for this that is different from the Barron and Kenny approach? or does MPLUS not compute mediation in this way?

Thank you!
 Bengt O. Muthen posted on Friday, February 21, 2014 - 11:26 am
Not sure what you mean by the Baron-Kenny approach, or what you mean by the assumptions of Preacher-Hayes. Mplus computes indirect effects using the product formula.
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