PSY 3213 Practice Questions with 100%
Verified Answers
What can factorial designs do?
to test limits (generalizability), test theories, and show interactions
Example of an interaction in words
When people learned at the water's edge, they performed better when tested at the water's edge
than when tested underwater. When people learned underwater, they performed better when
tested underwater than when tested at water's edge (ppt slide 47~look at picture)
Interaction are always almost more important than main effect
FACT
independent groups are...
~between subjects factorial designs or completely randomized designs
~All groups are independent of each other (each participant only gets 1 treatment condition)
~Both IVs can involve random assignment
~After data collection, compared scores for participants between those who had
different distractor and between participants of different ages
correlated groups are...
within subjects
Assigning participants to groups
, All IVs could have participants assigned randomly, or
All IVs could have participants assigned in a correlated fashion, or mixed assignment
Mixed assignment
A factorial design in which the group receiving one treatment is independent and the group
receiving the other treatment are correlated.
Within Groups
~A design in which each participant is presented with all levels of the independent variable
~Both variables are manipulated
~Also called a repeated measures factorial design
(Doesn't work with previous example; can't make people both older and younger.)
Three-way design
a factorial design with three IVs, each with two levels
3 way interaction
The interaction between two variables depends on the level of the third.
Quasi-experiment
A comparison that relies on already-existing groups (i.e., groups the experimenter did
not create).
Repeated measures
All participants take part in all conditions of the experiment
Can a quasi-experiment support a causal claim?
Verified Answers
What can factorial designs do?
to test limits (generalizability), test theories, and show interactions
Example of an interaction in words
When people learned at the water's edge, they performed better when tested at the water's edge
than when tested underwater. When people learned underwater, they performed better when
tested underwater than when tested at water's edge (ppt slide 47~look at picture)
Interaction are always almost more important than main effect
FACT
independent groups are...
~between subjects factorial designs or completely randomized designs
~All groups are independent of each other (each participant only gets 1 treatment condition)
~Both IVs can involve random assignment
~After data collection, compared scores for participants between those who had
different distractor and between participants of different ages
correlated groups are...
within subjects
Assigning participants to groups
, All IVs could have participants assigned randomly, or
All IVs could have participants assigned in a correlated fashion, or mixed assignment
Mixed assignment
A factorial design in which the group receiving one treatment is independent and the group
receiving the other treatment are correlated.
Within Groups
~A design in which each participant is presented with all levels of the independent variable
~Both variables are manipulated
~Also called a repeated measures factorial design
(Doesn't work with previous example; can't make people both older and younger.)
Three-way design
a factorial design with three IVs, each with two levels
3 way interaction
The interaction between two variables depends on the level of the third.
Quasi-experiment
A comparison that relies on already-existing groups (i.e., groups the experimenter did
not create).
Repeated measures
All participants take part in all conditions of the experiment
Can a quasi-experiment support a causal claim?
