Dr Wilkins Randomly Assigns Subjects to One of Two Groups

question 1

Multiple Choice

Dr. Wilkins randomly assigns subjects to one of two groups. He is interested in the effects of caffeine on anxiety levels. He gives subjects in the first group an extra two cups of coffee a day for six months. The second group receives an extra two cups of decaffeinated coffee a day for the same time period. Importantly, subjects do not know whether they are being given regular or decaffeinated coffee. By providing one group with decaffeinated coffee, Dr. Wilkins is trying to account for which potential element of the experiment?

• A) participant fraud
• B) inter-rater reliability
• C) the placebo effect
• D) variability

Distinguish between positive and negative instances in the context of generalizations.

Learn the difference between inductive generalization and deductive reasoning.

Grasp the significance of representative samples for accurate generalizations.

Understand the non-guaranteeing supportive nature of premises in inductive arguments.

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Definitions:

Stream Deposition

The process by which sediment carried by a stream is laid down or deposited in new locations, often resulting in the formation of deltas and alluvial fans.

Broad Plains

Expansive, flat areas of land with minimal elevation change, often found in the interior regions of continents.

Floodplain

The flat area adjacent to a river, prone to flooding during periods of high discharge, often fertile due to the deposition of sediments.

Delta

A landform created at the mouth of a river where it deposits sediment as it flows into another water body, such as an ocean or lake.