In the context of extraneous variables, history refers to
a. events that can influence the dependent variable, that occur between the first and second measurement of that variable.
b. events that can influence how accurately one can control the independent variable.
c. differences in participants' knowledge of the subject matter of the experiment in which they are participating.
d. biases brought to the study by one pre-selected group and not another.
A scattergram reveals three aspects of a bivariate relationship. Which of the following is NOT an aspect?
A) form B) frame C) direction D) precision
Jimmy is using PsycINFO to search for articles on bullying behavior. He wonders if there are other psychological terms (similar to bullying) he should be using in his search. What advice would you give Jimmy?
a. he should ask friends for new terms to look for
b. he should use the Thesaurus of Psychological Index Terms to identify similar terms used by other psychologists
c. a quick Google search would be the most efficient way to obtain additional search terms
d. he should not search for other terms because he would risk accessing articles that aren't relevant for his research
Which of the following is NOT a technique to help decide if there is a relationship between
two variables?
A) a scattergram B) cross-tabulation
C) bell curve D) measures of association
Which of the following is true regarding the online database PsycINFO?
a. it allows electronic access to full-text psychological journal articles published since 1980
b. it can be accessed through Google scholar
c. similar to Psychological Abstracts, it publishes summaries of psychologically relevant scholarly literature
d. because of its technical nature its use is really beyond the ability of most undergraduate students
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