When random assignment of participants to groups is not possible a quasi-experiment can help to minimize threats to internal validity.
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____________________ is a sequence of experiments conducted in order to progressively eliminate competing theoretical hypotheses.
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A technique used to estimate the effects of a combination of many independent variables without having to conduct a complete factorial experiment combining all levels of all variables is called ____________________.
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____________________ is a parametric test of statistical inference used for analyzing data from factorial experiment or a multilevel single-variable experiment.
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The most frequently used multiple-variable experimental design is called a(n) ____________________.
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A factor is the same thing as a(n) ____________________ variable.
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If both within-subject and between-subjects factors are included in a factorial design it is called a
A) mixed design.
B) heterogeneous design.
C) a functional design.
D) a converging series design.
The problem with conducting several single-variable experiments rather than a factorial experiment is that
A) more participants are needed.
B) asymmetrical transfer can be a problem.
C) interactions between variables cannot be assessed.
D) statistical analysis is more difficult.
An experimental design that allows the flexibility to choose independent variables and levels at certain choice points is
A) a mixed factorial design.
B) a converging-series design.
C) a functional experimental design.
D) a blocked design.
Suppose you conducted a factorial experiment having two factors one of which had three levels and the other of which had four levels. Both factors are between-subjects and each cell contains 10 participants. How many participants will be required?
A) 60
B) 80
C) 120
D) 240
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