If Participants Change Over Time in an Experiment, Which Threat

question 138

Multiple Choice

If participants change over time in an experiment, which threat to internal validity is potentially operating?

• A) Selection
• B) Maturation
• C) Instrumentation
• D) Diffusion of treatments

---

Definitions:

Profitability Ratios

Financial metrics used to evaluate a company's ability to generate profit relative to its revenue, assets, equity, or other financial metrics.

Operating Income

The profit realized from a business's operations after subtracting operating expenses from gross income.

Net Income

The total profit of a company after all expenses and taxes have been deducted from revenue.