Getting Better on a Task in a Study with Practice

question 38

Multiple Choice

Getting better on a task in a study with practice can cause a source of bias called ______.

• A) maturation
• B) testing effects
• C) regression toward the mean
• D) mortality

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Definitions:

Buttress Root

A bracelike root at the base of certain trees that provides upright support.

Pneumatophore

Roots that extend up out of the water in swampy areas and are thought to provide aeration between the atmosphere and submerged roots.

Storage Root

A root modified for the storage of nutrients and energy, typically in the form of carbohydrates, as seen in carrots and beets.

Photosynthetic Root

Roots capable of photosynthesis, typically found in some aquatic plants, allowing them to absorb carbon dioxide directly from their environment.