chapter 13 vocab terms Flashcards
quasi-experiment
In a factorial design, the arithmetic means for each level of an
independent variable, averaging over the levels of another
independent variable.
quasi-independent variable
A variable that resembles an independent variable, but the researcher
does not have true control over it (e.g., cannot randomly assign
participants to its levels or cannot control its timing). See also
independent variable.
nonequivalent control group pretest/posttest design
A quasi-experiment that has at least one treatment group and one
comparison group, in which participants have not been randomly
assigned to the two groups, and in which at least one pretest and one
posttest are administered
interrupted time-series
A quasi-experiment in which participants are measured repeatedly on
a dependent variable before, during, and after the “interruption”
caused by some event.
nonequivalent control group interrupted time series design
A quasi-experiment with two or more groups in which participants
have not been randomly assigned to groups; participants are
measured repeatedly on a dependent variable before, during, and after
the “interruption” caused by some event, and the presence or timing
of the interrupting event differs among the groups.
waitlist design
An experimental design for studying a therapeutic treatment, in
which researchers randomly assign some participants to receive the
therapy under investigation immediately, and others to receive it after
a time delay.
stable baseline design
A small-N design in which a researcher observes behavior for an
extended baseline period before beginning a treatment or other
intervention, and continues observing behavior after the intervention.
multiple baseline design
A small-N design in which researchers stagger their introduction of
an intervention across a variety of contexts, times, or situations.
reversal design
A small-N design in which a researcher observes a problem behavior
both before and during treatment, and then discontinues the treatment
for a while to see if the problem behavior returns.
nonequivalent control group pretest/posttest design
A quasi-experiment that has at least one treatment group and one
comparison group, in which participants have not been randomly
assigned to the two groups, and in which at least one pretest and one
posttest are administered
small N design
A study in which researchers gather information from just a few
cases.
small N design
A study in which researchers gather information from only one
animal or one person.
