model fit

I'm new to path analysis in SEM and suspicious about my model fit indices in R / lavaan: lavaan 0.6-6 ended normally after 27 iterations Estimator ML Optimization method NLMINB Number of free parameters...

I'm trying to figure out how to design a signal detection experiment with an odd dataset. the data comes from an RSVP experiment where observers are required to identify which letter falls with in a white ring cue that surrounds it for a single frame. Responses are measured in their distance in...

Hi guys, I am a bit confused about what k-fold Cross Validtation does. Is it better to remove non significant variables and tune with k-fold cross validation or the other way around? Or CV has nothing to do with tuning the model?

When using multilevel models based on maximum likelihoods, one can use either deviance statistics (e.g., -2LLs) for nested models or information criteria (e.g., Bayesian Information Criterion, BIC) to test which of two models better fit the data--as long as the models are both used to fit the...

Hello again Sorry - In relation to running Confirmatory Factor Analysis - I'm wondering whether someone is aware of RMSEA being impacted by high reliability scores ? As background, I understand that RMSEA can be affected by high factor loadings. Currently, I have a construct with 6...

Hoping someone can help me / point me in the right direction with this one. Seems like it should be straight forward, but just can't quite get my head around it or find the info I need. BACKGROUND: I am looking at an astronomical radio data set. For a bunch of radio sources, I have...

Hello, Discription of experiment I am researching "The effect of review valence and brand commitment on consumer's purchase intention" for my university thesis. I conducted a 3x2(no review/positive review/negative review x brand/no brand) between subjects design experiment.There were total...

Hi All, I'm new to this forum, and I hope I can be both of help and find help. My current problem involves modeling longitudinal data. I have four waves of data and I'm examining employment status and rearrest as endogenous outcome variables. I have built and run a generalized structural...

I have plant growth data dependent on temperature on a yearly basis for 6 years. The data exhibit two 'peaks' in growth during the season, with a dip in between. Individually, the yearly data does not appear to be normal using a probability plot. But when the data is collapsed into one column...

I am running an analysis of the influence of gender on a number of performance outcomes. My model is also moderated by the gender of the evaluator. The model has really poor fit (Df=241, N=851 I am looking at RMSEA (default model .309) and Hoelter (.05, Default model =12; .01 Default model...