- no control of confounding variables
this is for class - ANSWER-professor chen
single group, posttest only design - ANSWER-- what it sounds like
- no manipulation
- not good an controlling for confounding variables
implicit control group - ANSWER-- using the data of a hypothetical population
as a control group
- eg. using the general population's data on foreskin regrowth against your
own data on how your medication impacted foreskin regrowth among your
subjects
what design usually uses an implicit control group - ANSWER-single group,
posttest only design
single group, pretest-postest design - ANSWER-- yuh
- two measurements
- con: confounding factors such as time may account for any observed
changes
pretest-posttest, with natural control-group design - ANSWER-- using a
pretest-postest design on two naturally occuring groups
- no random assignment
- con: self selection effect may impact the representativeness of samples
randomized, posttest only, control group design - ANSWER-- a TRUE
experiment bc it uses random assignment and a control group
- most common type of experimental design
randomized, pretest-posttest control group design - ANSWER-- good control
over confounding variables
what are the benefits of using a pretest in a randomized, prettest-posttest
contorl group design? - ANSWER-- allows for quantization of change due to
treatment
, - verifies that the control and treatment groups were equal from the start
multilevel, randomized, between-subjects design - ANSWER-- a randomized,
pretest posttest , control group design except there are multiple groups with
various levels of treatment in addition to the contorl group
between group variances are meant to be ________ - ANSWER-- systematic
within group variances are _____ - ANSWER-non systematic
f test formula - ANSWER-F = [(stematic between group variance) + error
variance] / (error variance)
manipulation check - ANSWER-- a test to see whether manipulation is
effective
- eg. when testing anger's effect on memorization, you would chekc whether
your method of angering ppl actually works
follow up test for ANOVA - ANSWER-- planned comparisons
- post hoc teste
- priori tests
planned comparions aka priori comparisons - ANSWER-theory driven follow
up test for ANOVA
post hoc tests - ANSWER-data driven follow up tests for ANOVA
correlated groups design - ANSWER-- a design that uses groups that are non
independent of each other
correlated group designs are more ______ than independent group designs -
ANSWER-sensitive
within subject design - ANSWER-- a design in which each subject goes
through al manipulations
- only one group
- uses ANOVA
within subject designs are vulnerable to the _______ and _____ effects -
ANSWER-sequence and subject effects
three types of sequence effect - ANSWER-- positive practice effect
(participants get better with training)