Clinician-Rated Test Essay

1130 WordsDec 18, 20175 Pages
All clinician-rated test should have three types of reliability: internal reliability, retest reliability, and interrater reliability (Bagby, Ryder, Schuller, & Marshall, 2004). Research regarding who the HRSD was normed on is unavailable. However, Cusin et al. (2012) recently reported on the HRSD psychometrics properties. Interrater reliability of the total scores for the HRSD is considered to be a strong relationship ranging from 0.80–0.98, with Cronbach alpha estimates of ≥0.70 which is an adequate score. Interrater reliability examines the relationship between scores provided by different raters observing the same phenomenon and Cronbach's alpha, is the average of all possible split-half reliabilities (Shultz, Whitney, & Zickar,…show more content…
One issue with test retest reliability is that longer intervals are likely to impose psychological change, thus changing true scores (Furr, & Bacharach, 2013). Therefore, the interval amount of time can have an impact on the client’s score. Cusins et al. (2012), research does not indicate the interval time, but their retest reliability score of 0.81 is indicative of a strong relationship. The factor structure of the Hamilton depression scale comprises of part of validity 1) content, 2) convergent, 3) discriminant, 4) factorial, and 5) predictive validity. Cusins et al. (2012), did not go in depth regarding the assessment validity, but did indicate that the HRDS has been reported of having a validity from the ranges of range from 0.65 to 0.90, which is considered to be a strong relationship. A study by Bagby et al. (2004) did refer to the different types of validity in the HRSD. The term validity refers to if an assessment properly measures what it supposed to measure (Shultz, Whitney, & Zickar, 2013). Content validity is performed by a rational inspection of the completed test by subject matter experts (Furr, & Bacharach, 2013). According to Bagby et al. (2004), the HRSD has poor content validity. The rationale for this is because although the symptoms listed on the HRSD are features associated with depression, the assessment does not match the official DSM diagnostic criteria. Since the development of the HRSD, the definition of depression has

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