If a Researcher Runs an Ad in a Paper in Order

question 15

Multiple Choice

If a researcher runs an ad in a paper in order to recruit subjects, and places the first 10 people who call in one group and the next 10 people who call in another group, what sort of threat to internal validity has been introduced?

• A) Mortality
• B) Experimenter bias
• C) Selection bias
• D) Regression effect

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Definitions:

Form 941

A quarterly federal tax form filed by employers to report income taxes, social security tax, or Medicare tax withheld from employees' paychecks.

Form 940

A tax form filed by employers with the IRS to report annual Federal Unemployment Tax Act (FUTA) tax.

Employer's Payroll Tax Expense

Taxes that an employer is responsible for paying on behalf of its employees, such as social security and Medicare taxes.

General Journal Entry

A record in the general journal that documents a business transaction, including the accounts affected and the debit and credit amounts.