Dimensions Flashcards
three types of dimensionality
Unidimensional
Multidimensional w correlated dimensions
Multidimensional w uncorrelated dimensions
Exploratory Factor Analysis EFA
Used to find out the dimensionality
Unidimensional tests
Response to test items are driven only by one single attribute. This would imply the property of conceptual homogeneity.
Multidimensional tests
test includes items that reflect more than one attribute. The next q is whether they’re associated with each other: correlated dimensions. Responses to each attribute are each affected by a specific factor. higher order is the most common in correlated dimensions. The general attribute is computed using correlated factors
Multidimensional w uncorrelated dimensions
Not computed into 1 final test score, simply scores on each factor that form insight to general attribute