Melissa Ong

10 Questions 25 Answers 0 Followers

Questions related from Melissa Ong

Can I use different measurements for my DV if I run an experiment with repeated measures design?

Say my experiment with repeated measures design is concerning the effect of lighting on memory, and I measure memory by giving participants a random list of 50 words to memorize. Would my...

11 November 2017 5,016 4 View

If I have a significant regression model with 3 predictors, but only X1 was significant, is the regression equation with all 3 predictors still valid?

F-ratio in ANOVA table for model was significant, but only 1 of the 3 predictors in Coefficients table was significant.

10 October 2017 6,080 8 View

In a simple linear regression, Pearson's r and standardized beta are equivalent. How do we reconcile / explain this?

As far as I understand, r tells us the strength of the relationship and on a scatterplot, it is indicated by how close the data points are scattered around the regression line, where the closer...

10 October 2017 5,768 5 View

If I have two categorical variables with two levels each, can I describe their interaction effect using the levels (rather than the variable itself)?

My variables are categorical, X1 has 2 levels and X2 has 2 levels. Is it correct to say "X1 level 1 has interacted with X2 level 1 to result in highest DV score?" As far as I understand, it is...

10 October 2017 691 5 View

Is it sound practice to remove a subscale that is not of interest from a scale when doing CFA?

I have a scale with 7 subscales. I wish to remove 2 subscales (before I run my CFA) since they are not of interest in my research, and they sort of overlap with another factor in my full-fledge...

03 March 2016 8,644 5 View

What does a negative path loading/ coefficient mean in a CFA model?

I have a second-order CFA model with one higher-order factor and seven lower-order factors. I see a negative path loading from the higher-order factor to one of my lower-order factors, when all...

03 March 2016 9,701 19 View

What do I need to do to check for non-normality of variables in a structural model?

I'm using SEM with maximum likelihood (ML) estimation, with 4 latent variables.

07 July 2015 1,116 8 View

Is it necessary for all latent factors in a structural model to have the same amount of parcel indicators, and parcelled using the same technique?

I'm using 4-6 parcels as indicators for each of the 4 latent factors in my structural model. I parcelled the items in 2 factors using the internal-consistency approach (each parcel containing...

07 July 2015 6,270 14 View

What is the meaning of a positive/negative interaction term in a moderation analysis in multiple regression?

Interaction term as in the regression coefficient of centered predictor x centered moderator, both continuous variables.

04 April 2015 3,079 19 View

Hi, how do I test measurement invariance of a direct hierarchical (higher-order) CFA model across two groups in AMOS?

I have 4 first-order factors, each having 4-9 indicators, and 1 second-order factor.

01 January 2015 10,034 5 View