## latent variable score

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needpls
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### latent variable score

hii

1)plz say me how to compute latent variable score with hand,i want to compare with result of pls.

2)lisrel and pls compute latent variable score in diffrent ways or with same formula????

best regards

Diogenes
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Hi,

LV = w1 * MV1 + w2 * MV2 + ... + wn * MVn

Where MV are the manifested variable (indicators) after standardization [(Xi – Mean) / Standard Dev]
and wn are the outer weights.

After compute LV you should to standardize the LV scores to have the “standardized LV socres”, with mean = 1 and s.d. = 1

If you want to compute the LV scores unstandardized follow: viewtopic.php?t=812

Best regards,

Bido

needpls
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hiiii

thx so muchhhhh

but i had 2 question plzzz say my answre about question 2.

latent variable score in lisrel and pls have different way??

Diogenes
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Hi,
PLS-PM is consistent and consistente at large = as sample size and the number of indicators by LV increase --> the results of PLS-PM tend to be equal the results of LISREL.

LISREL is covariance based = the relations are computed from LV to the indicators, the last thing to be computed are the scores of LV.
PLS-PM is variance based = the relations are computed from indicators to the LV, the first thing to be computed are the scores of LV.

For these reasons, the correlation between scores computed by LISREL and scores computed by SmartPLS should be high, but they will not be the same.

For example (p.192):
Tenenhaus, M., Esposito Vinzi, V., Chatelin, Y.-M., & Lauro, C. (2005). PLS path modeling. Computational Statistics & Data Analysis, 48(1), 159-205. doi:10.1016/j.csda.2004.03.005

Best regards,

Bido

needpls
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thx so much,

so measure ment error that we have in lisrel in pls is too???

needpls
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sorry i can not find that article can u upload ??

thx

Diogenes
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needpls
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thx

belowzero
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Diogenes wrote:Hi,

LV = w1 * MV1 + w2 * MV2 + ... + wn * MVn

Where MV are the manifested variable (indicators) after standardization [(Xi – Mean) / Standard Dev]
and wn are the outer weights.

After compute LV you should to standardize the LV scores to have the “standardized LV socres”, with mean = 1 and s.d. = 1

If you want to compute the LV scores unstandardized follow: viewtopic.php?t=812

Best regards,

Bido
hi bido
for reflective model,how to compute LV score?

Diogenes
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Hi,
in the same way, use the "outer weights".

SmartPLS already computes the LV scores, see::
Report / PLS / Calculation results / Latent variable scores /

Best regards,

Bido

belowzero
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Diogenes wrote:Hi,
in the same way, use the "outer weights".

SmartPLS already computes the LV scores, see::
Report / PLS / Calculation results / Latent variable scores /

Best regards,

Bido
but i remember what you said before,the lv scores(original) SMARTPLS computed are not correct? i need compute them by hand?

thanks!

belowzero
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Hengkov
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Hi,

Yes, choose "mean 0 var 1" for standardized and LVs to standardized (original not standardized).

Regards,
Hengky

belowzero
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Hengkov wrote:Hi,

Yes, choose "mean 0 var 1" for standardized and LVs to standardized (original not standardized).

Regards,
Hengky

i see,thank you!

behnammousavi
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### Re: latent variable score

hi
i'm new in PLS and i have a model that i wanna run with pls3.
in my model i have a latent variable that must calculate from 4 other latent variable. in lisrel it could compute latent variable from other latent variable without any indicator but in pls when i want to do such thing it warn me that your model is invalid. is there any way so i can calculate this latent variable is pls?