The Posttest-Only Control-Group Design

question 102

Multiple Choice

The posttest-only control-group design

• A) suffers from the selection threat to internal validity.
• B) suffers from the statistical regression threat to internal validity.
• C) suffers from the history threat to internal validity.
• D) allows cause-and-effect statements to be made.

---

Definitions:

Online Sellers

Businesses or individuals that sell goods or services over the internet.

Opportunity Cost

The cost of the next best alternative foregone when making a decision.

Sweaters

Clothes typically made of wool, cotton, or synthetic yarn, designed to cover the upper body and arms, providing warmth.

Cookies

In computing, cookies are small text files stored on a user's device by a web browser, containing information about the user's website visits, preferences, and session details.