the normative data. With the CS, this was not possible and it was more difficult to compare results to normative comparison groups. Lastly, the R-PAS scores have been shown to possess similar and sometimes stronger inter-rater reliability than was seen in scores from the CS. This means that when different clinicians score the same protocol, they are quite likely to derive the same interpretations and scores. Holtzman Inkblot Test This is a variation of the Rorschach test, but uses a much larger pool of different images. Its main differences lie in its objective scoring criteria as well as limiting subjects to one response per inkblot (to avoid variable response productivity). Different variables such as reaction time are scored for an individual's response upon seeing an inkblot. Thematic apperception test Another popular projective test is the Thematic Apperception Test (TAT) in which an individual views ambiguous scenes of people, and is asked to describe various aspects of the scene; for example, the subject may be asked to describe what led up to this scene, the emotions of the characters, and what might happen afterwards. A clinician will evaluate these descriptions, attempting to discover the conflicts, motivations and attitudes of the respondent. A researcher may use a specific scoring system that establishes consistent criteria of expressed thoughts and described behaviors associated with a specific trait, e.g., the need for Achievement, which has a validated and reliable scoring system. In the answers, the respondent "projects" their unconscious attitudes and motivations into the picture, which is why these are referred to as "projective tests." Although the TAT is a commonly used psychological assessment instrument, its validity as a personality assessement test has been questioned. In contrast, it has high reliability and validity when used in research with larger samples. Draw-A-Person test The Draw-A-Person test requires the subject to draw a person. The results are based on a psychodynamic interpretation of the details of the drawing, such as the size, shape and complexity of the facial features, clothing and background of the figure. As with other projective tests, the approach has very little demonstrated validity and there is evidence that therapists may attribute pathology to individuals who are merely poor artists. A popular review has concluded that its scientific status "can best be declared as weak". A similar class of techniques is kinetic family drawing. Animal Metaphor Test The Animal Metaphor test consists of a