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| From | Laura Maria Schwirz <schwirzl@tcd.ie> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Mokken scaling procedure - output |
| Date | Tue, 12 Feb 2013 15:42:32 +0000 |
Apologies. I had some trouble sending the email and I thought the
Stata output caused the problem. Here's the output. I am actually just
reading van Schur's article and find it quite helpful.
. msp econ1 trust1 like1 energy1
Scale: 1
----------
Significance level: 0.008333
The two first items selected in the scale 1 are econ1 and trust1 (Hjk=0.7016)
Significance level: 0.006250
The item like1 is selected in the scale 1 Hj=0.5953 H=0.6273
Significance level: 0.005556
The item energy1 is selected in the scale 1 Hj=0.5535 H=0.5882
Significance level: 0.005556
There is no more items remaining.
Observed Expected
Number
Mean Guttman Guttman Loevinger
H0: Hj<=0 of NS
Item Obs Score errors errors H coeff
z-stat. p-value Hjk
---------------------------------------------------------------------------------------------------
energy1 3072 0.5949 553 1238.52 0.55350
56.4588 0.00000 0
like1 3072 0.5278 527 1195.19 0.55907
58.9920 0.00000 0
econ1 3072 0.5197 351 1003.71 0.65030
60.3237 0.00000 0
trust1 3072 0.5763 495 1240.05 0.60082
62.5854 0.00000 0
---------------------------------------------------------------------------------------------------
Scale 3072 963 2338.74 0.58824
84.2721 0.00000
On 12 February 2013 15:39, JVerkuilen (Gmail) <jvverkuilen@gmail.com> wrote:
> On Tue, Feb 12, 2013 at 10:09 AM, Laura Maria Schwirz <schwirzl@tcd.ie> wrote:
>> Dear Statalist Users
>>
>> I have a set of variables that look at party leader traits. For
>> example, on a scale from 0 to 5 how well does trait X describe leader
>> Y? I would like to examine whether these traits form a scale or not.
>> Is Mokken scaling procedure the right approach for this and if so,
>> what does the actual output tell me? See below for an example where
>> traits are knows how to manage economy, likeable, energetic,
>> trustworthy.
>
> There's no below to see. ;)
>
> I'm the resident psychometrician. In general I find that Mokken
> scaling is a good approach for many practical scale analyses, but I
> recommend that you read at least a few articles on it. You also should
> do a thorough job of missing data analysis and descriptive statistics,
> including correlations.
>
> Here are citations to the two articles I assign in my IRT course on
> nonparametric IRT:
>
> Meijer, R. R. & Baneke, J. J. (2004). Analyzing psychopathology items:
> a case for nonparametric item response modeling. Psychological
> Methods, 9, 354-368.
> van Schuur, W. (2003). Mokken scaling: between the Guttman scale and
> parametric item response theory. Political Analysis, 11, 139-163.
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
>
--
Laura Schwirz
PhD Candidate and IRCHSS Scholar
Department of Political Science
Trinity College Dublin
Dublin 2
Republic of Ireland
Email: schwirzl@tcd.ie
On 12 February 2013 15:39, JVerkuilen (Gmail) <jvverkuilen@gmail.com> wrote:
> On Tue, Feb 12, 2013 at 10:09 AM, Laura Maria Schwirz <schwirzl@tcd.ie> wrote:
>> Dear Statalist Users
>>
>> I have a set of variables that look at party leader traits. For
>> example, on a scale from 0 to 5 how well does trait X describe leader
>> Y? I would like to examine whether these traits form a scale or not.
>> Is Mokken scaling procedure the right approach for this and if so,
>> what does the actual output tell me? See below for an example where
>> traits are knows how to manage economy, likeable, energetic,
>> trustworthy.
>
> There's no below to see. ;)
>
> I'm the resident psychometrician. In general I find that Mokken
> scaling is a good approach for many practical scale analyses, but I
> recommend that you read at least a few articles on it. You also should
> do a thorough job of missing data analysis and descriptive statistics,
> including correlations.
>
> Here are citations to the two articles I assign in my IRT course on
> nonparametric IRT:
>
> Meijer, R. R. & Baneke, J. J. (2004). Analyzing psychopathology items:
> a case for nonparametric item response modeling. Psychological
> Methods, 9, 354-368.
> van Schuur, W. (2003). Mokken scaling: between the Guttman scale and
> parametric item response theory. Political Analysis, 11, 139-163.
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
>
--
Laura Schwirz
PhD Candidate and IRCHSS Scholar
Department of Political Science
Trinity College Dublin
Dublin 2
Republic of Ireland
Email: schwirzl@tcd.ie
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/