An Increase in Average Intelligence Test Performance During the Past

question 62

Multiple Choice

An increase in average intelligence test performance during the past decade would best illustrate why intelligence testing requires up-to-date

• A) validity tests.
• B) standardization.
• C) reliability indices.
• D) processing speed estimates.

---

Definitions:

Directional Hypothesis

A hypothesis that predicts not only a relationship but also the direction of the relationship between two variables or groups.

Alpha

A threshold value used in statistics to determine the significance level below which a null hypothesis is rejected in a hypothesis test.

Non-directional Hypothesis

A hypothesis that specifies there is a difference or relationship, but not the direction of the difference or relationship between variables.

T-statistic

A type of statistic calculated from sample data, used in hypothesis testing to determine whether to reject the null hypothesis, particularly in t-tests.