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Social Science
Psychology
Experimental Psychology
Chapter 14 (In-Chapter Quizzes)
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Terms in this set (18)
The one-way independent groups design has one IV/two IVs/two or more IVs. The number of groups is equal to the number of levels of the IV/N.
one IV; the number of levels of the IV.
A comparison is the sum of/difference between/SD of two group means/sample sizes/SDs.
difference between; group means.
Planned analysis should specify comparisons that
a. appear largest, on examination of the data.
b. have SDs that are closest to homogeneous.
c. correspond most closely with the research questions.
d. cover all possible pairs of groups in the study.
c.
The assumption of homogeneity / heterogeneity of means / variance permits us to pool over groups and thus calculate a more precise estimate of the mean / SD of the sample / population.
homogeneity; variance; SD; population
A figure that displays the means and CIs for several independent groups allows us to
a. use the overlap rule to assess, approximately, any comparison.
b. do very little, without further targeted calculations.
c. use the overlap rule to assess, approximately, the overall effect size.
d. identify which comparisons had been planned and preregistered.
a.
With several independent groups, if the largest group SD is no more than about twice the smallest group SD, it's probably reasonable to assume __________________.
homogeneity of variance.
A subset comparison/contrast is the difference between the means/differences of two subsets of group means/SDs.
contrast; means; group means
Preregistration of the planned analysis is especially important for extended designs with many means because, in this case
a. exploratory analysis is especially likely to discover valuable unexpected findings.
b. there are many more comparisons to consider than subset contrasts.
c. the risk of cherry picking, seeing faces in the clouds, is especially large.
d. All of the above.
c.
In a one-way independent groups design with k groups, the df is ______ and the maximum number of separate research questions that can be addressed is ______.
(k-1); (k-1)
Aim to choose a set of planned contrasts so that
a. the number of contrasts is not too large.
b. they make good sense in the research context.
c. they address the main research questions.
d. All of the above.
d.
Planned/exploratory analysis may discover unexpected but important results, but it could easily be cherry picking preregistered and so any conclusion should be tentative/ confident.
exploratory; cherry picking; tentative.
Following planned analysis, then exploratory analysis, it may be valuable to
a. look for further variables or analyses that could provide converging evidence.
b. re-analyze the most interesting exploratory results as planned contrasts.
c. retrospectively preregister the most interesting of the exploratory results.
d. carry out additional analyses as planned contrasts that address additional research questions
a.
In the one-way repeated measure design, there is (or are) one IV/two IVs/two or more IVs and one group/ two groups/two or more groups. Each participant sees one level/all levels of an IV
one IV; one group; all levels of an IV.
Compared with a one-way independent groups design, the one-way repeated measure design is likely to
a. require more participants.
b. give longer CIs on effects of interest.
c. have fewer carryover effects.
d. None of the above.
d.
In a figure displaying means and CIs for a repeated measure design, a line joining the CIs/means/ differences signals the nature of the IV/DV.
joining the means; IV
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