SEM / CFA: Parceling of Items

If you run a structural equation model (SEM) or a confirmatory factor analysis (CFA), then item parcels can provide a couple of advantages for your analysis. This tutorial will show you, what parcels are, what advantages they possess, and which specific parceling schemes you can use for your data.

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0:00 Start
0:23 What is parceling?
0:56 Why parceling?
2:15 Which parceling method?
3:12 Parceling for a unidimensional scale (random parceling, balancing approach, content based parceling)
6:08 Parceling for a multidimensional scale (facet-representative parcels and domain-representative parcels)
8:51 Fit indices used with item parceling (RMSEA, SRMR; not CFI)

References parceling:
Little, T. D., Rhemtulla, M., Gibson, K., & Schoemann, A. M. (2013). Why the items versus parcels controversy needn’t be one. Psychological Methods, 18(3), 285-300.
Rhemtulla, M. (2016). Population performance of SEM parceling strategies under measurement and structural model misspecification. Psychological Methods, 21(3), 348-368.

semTools-Package for R (function parcelAllocation):
https://cran.r-project.org/web/packag...