In the Context of the Historical Development of Single-Subject Designs

question 15

Multiple Choice

In the context of the historical development of single-subject designs, which of the following took place at the beginning of the 20^th century?

• A) A global measurement of therapeutic effectiveness was found to be inappropriate because of the overwhelming complexity and number of confounding variables.
• B) The first experiments were performed on individual subjects.
• C) Awareness of the inadequacies of the uncontrolled case study led to the existence of the therapeutic professions being challenged.
• D) The invention of descriptive and inferential statistics facilitated group comparisons.

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Definitions:

Sales

The total amount of revenue generated from selling goods or services over a specific period.

February

This month falls second in the Gregorian calendar lineup, featuring 28 days in typical years and 29 in those considered leap years.

Administrative Expense

Costs related to the general operation of a company, such as salaries of executive officers and costs associated with the corporate office.

Selling Expense

Costs incurred directly from the selling of products or services, such as commissions and advertising costs.