A Test Constructor Is Interested in Determining the Reliability of a Certain

question 13

Short Answer

A test constructor is interested in determining the reliability of a certain item on a new test of aggressiveness, the ASAP (Aggressive Syndrome Assessment Profile). The items were scored 1 for showing aggressiveness and 0 for passivity. For each subject, the total score on the test is reported, high scores indicating higher levels of aggressiveness. Subj Item Score Total Score $$\begin{array}{l}\text { Subj }&\text { Item Score}&\text { Total Score }\\& \mathrm { X } & \mathrm { Y } \\1 . & 1 & 10 \\\text { 2. } & 1 & 12 \\\text { 3. } & 1 & 10 \\\text { 4. } & 1 & 11 \\5 . & 1 & 15 \\\text { 6. } & 0 & 4 \\\text { 7. } & 0 & 5 \\\text { 8. } & 0 & 6 \\\text { 9. } & 0 & 9 \\10 . & 0 & 7\end{array}$$ Find the point-biserial reliability value for the selected item.

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Definitions:

Eyeball

The spherical part of the eye that contains the structures necessary for vision, including the cornea, iris, lens, and retina.

Nociceptors

Sensory receptors found throughout the body that respond to potentially harmful stimuli by sending pain signals to the nervous system.

Chemicals

Substances with a distinct molecular composition that are used in or produced by chemical processes.

Damaged Cells

Cells that have been impaired in function or structure due to injury from physical, chemical, or biological agents.