Polarization is the percentage of extreme ratings, e.g. the values 1 and 7 for a grid with a 7-point ratings scale.
indexPolarization(x, deviation = 0)List of class indexPolarization:
scale: Minimum and maximum of grid rating scale.
lower,upper Lower and upper value to decide which ratings are considered extreme.
polarization_total: Grid's overall polarization.
polarization_constructs: Polarization per construct.
polarization_elements: Polarization per element.
A repgrid object.
The maximal deviation from the end of the rating scale for values to be considered an 'extreme'
rating. By default only values that lie directly on ends of the ratings scales are considered 'extreme' (default =
0).
p <- indexPolarization(boeker)
p
# control the output
print(p, output = "T") # total polarization
print(p, output = "C") # construct polarization
print(p, output = "E") # element polarization
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