If a Researcher Finds a Negative Correlation Between the Number

question 169

Multiple Choice

If a researcher finds a negative correlation between the number of hours that students play computer games and grades, this means that

• A) computer game playing causes a decrease in grades.
• B) computer game playing causes an increase in grades.
• C) lower grades cause a student to be disinterested in studying and more interested in playing computer games.
• D) an experiment would have to be conducted to establish a cause-and-effect relationship between video game playing and grades.

---

Definitions:

Minimum Change

The least alteration that can occur in a situation or in the value of a variable.

Absolute Threshold

The minimum intensity of a stimulus at which it can be detected by an individual at least 50% of the time.

Difference Threshold

The smallest detectable difference between two stimuli that a person is able to sense, also known as the just noticeable difference (JND).

Minimum Threshold

The lowest intensity at which a stimulus can be detected 50% of the time.