A Researcher Examines a Program Looking at the Effects of Mentoring

question 14

Multiple Choice

A researcher examines a program looking at the effects of mentoring on poor readers' reading achievement. He looks at two different schools. One serves as the control and the other the experimental group. Both schools had reading achievement that was around the 50th percentile. During the time that the mentoring program is in place in the experimental group, a statewide reading initiative is started in randomly selected schools. The experimental, but not the control school is involved in the statewide reading initiative. At the end of the year, the experimental group does better than the control. From the information presented above, a likely threat to the internal validity of the study is:

• A) Selection by mortality interaction
• B) Mortality
• C) Selection-history effect
• D) Selection-maturation effect

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Definitions:

Xenon Light

A type of high-intensity discharge (HID) lighting that uses xenon gas to produce a bright, white light, often used in automotive headlights.

Maintain Arc

Maintaining Arc refers to the process of keeping a consistent electrical arc during welding, crucial for achieving a strong and uniform weld seam.

Dash Display Data

Information displayed on a vehicle’s dashboard, including speed, fuel level, engine warnings, and other vital driving data.

HUD

HUD stands for Head-Up Display, a transparent display that projects critical information, such as speed and navigation, in the driver's line of sight.