Professor Hoffman Was Interested in the Effects of Vitamin B12

question 30

Multiple Choice

Professor Hoffman was interested in the effects of vitamin B12 deprivation on learning. One group is given vitamin B12 in a box labelled "Vitamin X." The comparison group is given a sugar pill in a plain white box. He finds that the vitamin group learns lists of words faster and concludes that B12 affects learning. What's wrong with this experiment?

• A) It is confounded because of a possible experimenter bias effect.
• B) It is confounded because there was no random assignment.
• C) It is confounded because the study cannot be replicated.
• D) There were demand characteristics present in the study.
• E) There is nothing wrong with this experiment.

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Definitions:

Nutrition Care Process

Comprehensive model developed to standardize the process of nutrition care delivery.

ADIME

Four-step process of the Nutrition Care Process; assessment, diagnosis, intervention, and monitoring and evaluation.

Waist Circumference

A measurement around the smallest area below the rib cage and above the belly button, used to assess abdominal obesity and related health risks.

Cut-off Points

Predetermined values or levels at which changes in treatment or strategy are applied.