Chapter 13 RP

main effect in a factorial design

When an independent variable has an effect on a dependent variable

Nonequivalent control group pretest/posttest design

there is a treatment group that is given a pretest, receives a treatment, and then is given a posttest. But at the same time there is a non-equivalent comparison group that is given a pretest, does not receive the treatment, and then is given a posttest

Interrupted time-series design

involves collecting data consistently before and after an interruption.

Nonequivalent control group interrupted time-series design

taking a set of measurements at intervals over a period of time both before and after an intervention of interest in two or more nonequivalent groups.

Wait-list design

An experimental design where some participants receive therapy immediately, while others receive it after a delay.

Stable-baseline design

A small-N design where behavior is observed over a baseline period before and after an intervention.

Reversal design

A small-N design where problem behavior is observed before, during treatment, and after treatment cessation to observe behavior changes.

single-N design

A study gathering information from a limited number of cases, including single individuals or animals.

Which of these is NOT a reason for a researcher to select a quasi-experimental design?

to insure internal validity

Which of these is not a method for addressing the external validity of the conclusions of a small-N study?

Randomly assign people to the treatment and control conditions.

Nonequivalent control group design

assignment to group was not random

interrupted time-series design with a nonequivalent control group

aking a set of measurements at intervals over a period of time both before and after an intervention of interest in two or more nonequivalent groups.

matched groups design

an experimental design where the participants in the study are chosen because they have variables that match each other.