A Meta-Analysis in 1980 Examined the Results of 475 Separate

question 3

Multiple Choice

A meta-analysis in 1980 examined the results of 475 separate studies of the effectiveness of psychotherapy. What did the researchers conclude on the basis of their meta-analysis?

• A) Overall, behavior therapies were more effective than psychoanalytic therapies.
• B) Lengthy treatments were, on average, more effective than brief treatments.
• C) The typical client was better off than 75% of individuals who were not treated.
• D) all of the above

---

Definitions:

Sales

The exchange of goods or services for money, constituting a primary activity for commercial businesses.

Scatter Diagram

A type of graph used in statistics to display values for two variables for a set of data, showing the relationship between the variables.

Linear Model

A statistical model assuming a linear relationship between the input variables (predictors) and a single output variable.

Income

The financial gain received by an individual or entity, usually through wages, investments, or business operations.