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:

Energy Expended

The total amount of calories burned by the body during physical activity or metabolic processes.

Heat

The form of energy that is transferred between systems or objects with different temperatures (moving from high to low temperature).

Anabolic Reactions

Biochemical processes in cells that synthesize complex molecules from simpler ones, requiring energy, and crucial for growth, repair, and storage.

Catabolic Reactions

Catabolic Reactions are metabolic processes that break down molecules into smaller units, releasing energy stored in chemical bonds.