why is it appropriate to apply item response theory what is the purpose of the item response test how to use item response theory which type of sample should item response theory be used for why is item response theory important what is item response theory why use a clinical sample for item response theory is an item response theory used by clinical psychologists only what is the importance of using a heterogeneous sample why is a likert scale used in psychometric research which approach is appropriate to use for item response theory can a likert scale be used to assess psychopathology of individual which of the following is the appropriate use of item response theory what is the importance of item response which approach would use a heterogeneous sample for item response theory? why use a clinical sample what would be appropriate in order to test the use of item response theory? embretson and sein, 2000 what is the appropriate sample size for item response theory in clinical settings? why use only a sample which psychometric measures can discriminate between individuals with a particular mental disorder