Professor Hoffman Was Interested in the Effects of Vitamin B12

question 372

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)There were demand characteristics present in the study.
• C)It is confounded because there was no random assignment.
• D)It is confounded because the study cannot be replicated.
• E)There is nothing wrong with this experiment.

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Definitions:

Significant Influence

The power to participate in the financial and operating policy decisions of another entity, but not control those policies, typically associated with ownership of 20% to 50% of voting shares.

Net Income

The total earnings of a company after subtracting all expenses from revenues, including taxes and operating expenses.

Equity Method

An accounting technique used to record investments in other companies, where the investment is initially recorded at cost and subsequently adjusted to reflect the investor's share of the investee's profits or losses.

Journal Entries

The basic way to record financial transactions in double-entry bookkeeping, involving debits and credits in accounting records.