Are negative valued indicators allowed in SEM?

Hello, Using secondary and continuous data, i am trying to run a SEM with two latents. One indicator has both negative and positive values. Is it wrong? (I am gonna run the model in AMOS) Thx on...

14 February 2021 2,801 8 View

How to de-clump HEK293 suspension cells?

I have a problem with clumping of HEK293 suspension cells, and this clumping problem decreases the cell viability. I will transfect the cells if I were to reach a favorable cell count. What can I...

17 January 2021 354 4 View

How to estimate dichotomous variables in SEM?

14 October 2020 5,912 3 View

Is single indicator usage is appropriate in SEM when the data ise continous?

Hello, to use single indicator in SEM , reliability is constrained to cronbach alfa. But when we use continous data we do not calculate cronbach alfa, then can we use single indicator latents for...

02 May 2020 3,455 3 View

In structural equation, Can coefficient between covariate and indicator when controlling latent be estimated ?

Hello, In MIMIC models, can coefficient between covariate and indicator when controlling latent be estimated by direct paths from covariate to indicator? do you mind to take a look at my model...

29 February 2020 374 3 View

In SEM how we favor a model?

Hello, In structural equation modeling can we favor a model over the rival one because of better multiple correlation? I have two rival models. First is slightly have better fit values than...

16 November 2019 5,337 1 View

How many cause variables can we include in a MIMIC model?

hello, I want to run a MIMIC model in AMOS, is there a ideal number of cause indicators? Thanks on advance,

22 September 2019 4,046 9 View

Is scale mean a statistic that can be tested for significance?

Hello, My friend created a hypothesis "Is x (variable) is significant?". I found this hypothesis weird:) Anyway, he insists on testing this. I calculated the mean of the scale (x) on SPSS. Is...

31 July 2019 5,842 5 View

In SEM, can we link egzogenous observed variable to indicator of endogenous latent?

In my structural equation model, I have a an observed egzogenous variable, according to modification indices, can i link it to an indicator of endogenous latent? Thanks in advance

01 November 2018 3,191 6 View

In Amos I can not fix parameter variance to 1?

I am trying to run Second degree cfa in AMOS. As far as I know I must fix second degree factor's variance to 1. But when I right click to I can not see fixing option.I mean there is no box to fix 1.

20 July 2018 9,485 2 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

What test should i use in comparing the correlation between categorical and continuous variables?

Dear all, I have the variable (Surgery duration) represented by values in minutes and the variable (preoperative neuropraxia cases) represented as (Yes/No) values. I want to compare these two...

03 March 2021 5,427 5 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

How to find the mean, SD and CI in SPSS?

Hi, I hope that someone can help me with this task: I have 5 groups of participants which are numbered in SPSS from 1 to 5 (according to their group number) and are all under the variable group....

03 March 2021 506 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 View

The procedure compute?

02 March 2021 5,204 3 View

Does anyone know what a '.' means in SPSS?

Hi everyone! I was wondering if anyone would be so kind as to help me with regards to my data set on SPSS! I was checking for multivariate outliers via the standardised residuals ('Linear...

02 March 2021 7,910 3 View

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View