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Preparing Research Design

Research instrument

Metric characteristics of the measuring (CFA, EFA: PCA, AF, IF, PAF, ML… reliability;
ALPHA, SPLIT HALF, GUTMAN…McDonald Omega coefficient (ω)... Robust Monte Carlo simulations, rotations, bootstrapping....

Experiments and Quasi-Experiments (causality and non -causality)

Ex post facto

Action research
Case study
Data measurement scales (constructing and validating)