A Forensic Psychologist Is Attempting to Assess the Reliability of a New

question 64

Short Answer

A forensic psychologist is attempting to assess the reliability of a new test of psychopathy. A random sample of inmates from a large state prison, all of whom had been convicted of violent offenses was selected and given the test. Assume that the test is composed of five items. The test items were scored from 1 to 10, with a 10 assumed to define the highest level of psychopathy. $\begin{array}{c}\text { Items } \\\begin{array}{cccccc}\text { Subjects } & \text { a. } & \text { b. } & \text { c. } & \text { d } & \text { e. } \\1 & 1 & 3 & 2 & 6 & 2 \\2 . & 7 & 9 & 8 & 10 & 9 \\3 . & 5 & 6 & 7 & 4 & 5 \\4 . & 8 & 8 & 9 & 10 & 8 \\5 . & 3 & 4 & 5 & 4 & 4 \\6 . & 2 & 6 & 5 & 3 & 2 \\7 . & 7 & 6 & 8 & 6 & 7 \\8 . & 9 & 10 & 10 & 10 & 9 \\9 . & 5 & 5 & 6 & 5 & 4 \\10 . & 7 & 8 & 5 & 7 & 6\end{array}\end{array}$

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Definitions:

Erythrocytes

Red blood cells that transport oxygen from the lungs to tissues throughout the body and return carbon dioxide back to the lungs for exhalation.

Leukocytes

White blood cells; colorless amoeboid cells that defend the body against disease-causing organisms.

Hemoglobin

A protein in red blood cells responsible for transporting oxygen from the lungs to the rest of the body and carbon dioxide back to the lungs.

Plasma

The fluid portion of blood in which red blood cells, white blood cells, and platelets are suspended.