Evaluating Operational Definitions Alyssa Is Studying the Effectiveness of a New

question 55

Multiple Choice

Evaluating Operational Definitions Alyssa is studying the effectiveness of a new method of strength training.
If she measures the experimental group before "happy hour" and the control
Group after "happy hour," her results would be confounded by a ____ threat.

• A)history
• B)maturation
• C)selection
• D)testing

---

Definitions:

Meters

Units of length in the metric system, equivalent to 100 centimeters or approximately 39.37 inches.

Conversion Factor

A ratio or factor used to convert quantities expressed in one set of units to another, such as from inches to centimeters.

Centimeters

A unit of length in the metric system equal to one hundredth of a meter.

Meters

The base unit of length in the International System of Units (SI), equal to approximately 39.37 inches.