A Threat to Internal Validity Due to Something That Occurs

question 4

Multiple Choice

A threat to internal validity due to something that occurs and affects the dependent variable during an experiment,but that is unplanned and outside the control of the experimenter is known as ________________.

• A)testing effect
• B)instrumentation
• C)history effects
• D)maturation effect

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Definitions:

Coal-Burning Power Plants

Facilities that generate electricity by burning coal as fuel, releasing carbon dioxide and potentially other pollutants.

Sulfur Dioxides

are a type of air pollutant produced from burning fossil fuels, contributing to acid rain.

Respiratory Tracts

The pathways that air takes to enter and leave the lungs, facilitating gas exchange.

Lower Atmosphere

The part of the Earth's atmosphere closest to the surface, extending from the surface up to the tropopause, and is where most weather events occur.