After Careful Ethical Review of Planned Procedures, a Researcher Tests

question 46

Multiple Choice

After careful ethical review of planned procedures, a researcher tests a new brain activation drug by taking a sample of 50 volunteers and randomly assigning 25 participants to the treatment condition and 25 to the control (placebo) condition.She then carries out an fMRI scan to assess the level of activation in regions of the participants' brains 30 minutes after administering the drug.She carries out a between-participants t-test in SPSS which provides the output shown below: Which of the following statements is true?

• A)The assumption of equal variance is irrelevant.
• B)The assumption of equal variance is violated.
• C)The assumption of equal variance might be violated but we cannot tell from this output as we only have standard deviations
• D)We cannot judge whether the assumption of equal variances is violated as we need to see the population distribution.
• E)None of the above.

Comprehend the steps and importance of the scientific method in psychology.

Differentiate between theories, hypotheses, and predictions.

Recognize the significance and how to establish internal and external validity in studies.

Identify key concepts related to research design and methodology in psychology.

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Definitions:

Marginal Rate of Substitution

The pace at which a consumer is capable of sacrificing some portion of one item to obtain a different item, without altering their overall happiness.

Marginal Rate of Substitution

The rate at which a consumer is willing to substitute one good for another while maintaining the same level of utility.

Marginal Utilities

The supplementary utility or satisfaction received by using one more unit of a good or service.

Lemonade

A sweetened beverage made from lemon juice, water, and sugar, often associated with simple entrepreneurial ventures like lemonade stands.