A Researcher Was Interested in the Effects of Arousal and Personality

question 9

Essay

A researcher was interested in the effects of arousal and personality on individuals' GRE test performance.The personality variable he examined was individuals' level of introversion-extraversion.Based on questionnaire responses,each participant was classified as an "extravert" or an "introvert." The researcher manipulated arousal level by giving caffeine to participants prior to administering a practice GRE test.Participants were randomly assigned to a high-caffeine condition,a medium-caffeine condition,or the no-caffeine condition.All participants then completed a version of the quantitative portion of the GRE.
Suppose the researcher observed the following means for each group: The researcher claims that the Arousal and Group variables in this experiment are not relevant independent variables.State whether you agree or disagree with this statement,and explain your reasoning.

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Definitions:

Genetic Factors

Attributes, characteristics, or susceptibilities that are influenced by the genes inherited from one's parents.

Nature and Nurture

A concept that describes the influence of genetic inheritance (nature) and environmental factors (nurture) on the development of traits and behaviors.

Genes

Units of heredity made up of DNA that are responsible for determining the characteristics of an organism.

Socially Confident

Being comfortable and self-assured in social situations, able to interact with others easily and without fear of judgment or rejection.