Good Evening Sir/Ma'am,
I have a Model with four constructs (A, B, C, D). The Constructs are related in the following manner:
A-------> B-------> C--------> D.
Each Construct is having "Repeated measures" i.e., each construct is a "State-level variable", which is to be repeatedly measured, to obtain its Trait-level.
The sample respondent is Employee.
I am planning to use "Hierarchial Linear Modelling" to analyse the Model.
So, could you please suggest me the Minimum sample requirement at:
1) Level-1 (i.e., How many times should I measure the state-level variable?) &
2) Level-2 (i.e., How many Employees are required?)
You need to know even roughly the variance components of your model to answer the question. The theoretical background is exposed (for instance) in
Diggle, P. J.; Heagerty, P.; Liang, K.-Y. & Zeger, S. Analysis of longitudinal data. Oxford University Press, 2002, 25, 379 p.
See also: http://www.bristol.ac.uk/cmm/learning/multilevel-models/samples.html for software resources and documentation.
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