Chapter 12: Mixed Design Flashcards
Which factorial design has AT LEAST 1 within-subjects design and AT LEAST 1 between-subjects design?
mixed design
In which factorial design do participants receive every level of the within-subjects IV, but only 1 level of the between-subjects IV?
mixed design
T or F: between-subjects design is more powerful, and more likely to find a significant result
FALSE; within-subjects design is more powerful, and more likely to find a significant result
What is a single-subject design?
a special type of within-subjects deign using 1 participant or a single group to assess changes within that individual or group
In a single-subject design, which factor serves as its own control?
the participant
What occurs in an A-B design?
A) the researcher takes a baseline measurement, then introduces the intervention, and measures the same variable again (B)
What does the second “A” in an A-B-A design mean?
the researcher removes the intervention, and takes another measurement is taken
What does an A-B-A design help you establish?
covariation by showing that behavior changes as researchers introduce and remove a treatment
What does an A-B designestablish?
a cause-and-effect relationship
What design provides even more proof of causality, but can be problematic and unethical?
A-B-A-B design
What does the last “B” stand for in an A-B-A-B design?
the treatment (intervention) is reintroduced)
How do you calculate the marginal mean?
by pooling the averages of all of the levels of 1 variavle
The marginal mean tests if there is a(n) ______
main effect
In a marginal mean, you have to complete a(n) _______ to see if the difference is significant or not
analysis
What does it mean if there is an additive?
There is NO interaction, because the difference between the 2 groups is same throughout
When we have 1 IV, do we use:
a) Eta^2
b) partial Eta^2
a) Eta^2
When we have 2 or more IVs, do we use:
a) Eta^2
b) partial Eta^2
b) partial Eta^2
What is the name for the group that receives an already-established treatment throughout the study:
treatment-as-usual group
The ______________ group can be compared to the experimental intervention group to determine if the experimental treatment is more effective than the established one
treatment-as-usual group
Participants in a ___________ group do not receive treatment or intervention until AFTER the completion of the study
waiting-list control group
In a ______ group, participants do not receive treatment or intervention until after the completion of the study
a) placebo control
b) treatment-as-usual
c) straight control
d) waiting-list control
d) waiting-list control
What is a double blind procedure?
when both the participants and treatment administratorss are unaware of the types of treatments that the participants are given
What is the experimenter-expectancy effect (aka experimenter bias)
when a bias causes a researcher to unconsciously influence the participants of an experiment
An experiment investigating how pet-co sleeping and mindfulness affects stress levels involves how many factors?
a) 2
b) 3
c) 4
d) 6
a) 2
An experimenter that combines within-subjects and between-subjects methods of data collection is termed a(n) _____ design
a) interactive
b) factorial
c) mixed
d) A-B-A-B
c) mixed
A single-subject design makes the most sense to use when:
a) cause and effect is NOT a goal of the research
b) the population from which the sample is to be taken is small
c) more than one independent variable is to be studied
d) external validity is a primary goal of the research
b) the population from which the sample is to be taken is small
How many times is the treatment presented in an A-B-A-B-A design?
a) once
b) twice
c) three times
d) four times
b) twice
In a single-blind experimental design, who is blind to the treatment being provided?
a) the participants in all conditions of the experiement
b) the administrator of the treatment
c) the participants and the administrator of the treatment
d) the experimenter analyzing the data
a) the participants in all conditions of the experiement
Devising new measures of a dependent variable is:
a) expected, so that one avoids duplicating previous research
b) prioritized, as this is how science advances
c) discourages, because there is little role for creativity in science
d) a last resort, because existing measures have been validated
d) a last resort, because existing measures have been validated
In a factorial ANOVA, the term eta^2 = .225 measures the:
a) probability of obtaining the result by chance
b) main effect
c) interaction
d) effect size
d) effect size
When conducting a 2x3 factorial design, there are _____ possible main effect(s) and _____ possible interaction(s)
a) two; one
b) two; three
c) one; three
d) three; six
a) two; one
