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38 Cards in this Set

  • Front
  • Back
Belmont Principles (5)
TRIBJ
1)trust
2)respect for persons
3)integrity
4)beneficence
5)justice
to help solve the problem of carryover effect, use...
counterbalancing
respect for persons
voluntary participation, informed consent
beneficence
benefits outweigh the risks
justice
selection process is fair; use science for things that benefit society
trust
debriefing, deception, confidentiality, anonymity
internal analysis
an analysis of the effects of nonmanipulated variables-like looking at the effects of subject variables or the effects of subject variables and treatments on the dv
Cross-lagged Panel Technique
collect correlational data on 2 or more separate occasions (with the idea that causes precede effects)
what correlational design provides a partial solution to the problem of direction of causality?
Cross-lagged Panel Technique
one-group pretest-posttest design
a pseudoexperimental design where one group of subjects is pretested, receives a treatment, and is then posttested
one-shot case study (posttest-only design)
a single group is observed after a treatment (no comparison)
history, maturation, testing, instrumentation, and mortality are all...
types of threats to internal validity
threats to internal validity
variables that are beyond the control of the researcher and prevent him from determining that the treatment was the sole cause of the outcome
history
events that occur (other than the treatment) between the treatment and measurement of outcome that may have an effect on the outcome
maturation
the effects of internal processes that unfold within subjects as a function of time (getting tired, bored, hungry, etc.)
testing
effects of subjects knowing they're being tested on the outcome; effects of observation on outcome rather than effects of treatment
instrumentation
effects of changes in the observer/researcher (grow tired, hungry, etc.)
mortality
loss of subjects; this could make a difference in the results since those who left the study may have had different results than those who stayed for some reason
threats to internal validity occur in...
one-group pretest-posttest design
in the one-shot case study design, the only comparisons researchers can kind of make to the group after treatment is ...
remembered impressions of other groups or assumptions of what the group might have been like without the treatment
one-group pretest-posttest design
measure the group before and after the treatment
pseudoexperiment
don't have good methods for comparison
threat to internal validity for static-group comparison design
selection effects
selection effects (as a threat to internal validity for a Static-group comparison desigh)
the effects of initial differences between the two groups not caused by the treatment
Static-group comparison design
a pseudoexperimental design which uses 2 groups of subjects, only one of which receives a treatment before the results are measured
main difference b/w experiments and quasi-experiments
in quasi-experiments, subjects are not randomly assigned to experimental groups whereas they are in experiments
2 kinds of quasi-experiments
interrupted time series design, and nonequivalent control group design
interrupted time series design
(uses a within-subjects design); the effect of the IV is assessed by comparing multiple observations of the same group of people-either b4 and after administration of one level of treatment or after the administration of different levels of treatment
nonequivalent control group design
(uses a b/w-subjects design); the effect of the IV is assessed by comparing 2 or more groups of subjects-subjects who are not assigned at random to their groups
2 fatal mistakes of the 1936 Literary Digest Poll
1)only mailed to telephone and car-owners so it was biased
2)voluntary response
stratified random sampling
the population is first divided into a number of parts or 'strata' according to some characteristic, chosen to be related to the major variables being studied
double-barrel questions
asks about two different items
ceiling effect
when test questions are too easy and most people get high scores so their scores won't change much with the treatment(high scores=ceiling)
floor effect
when test questions are too hard and most people get low scores-scores won't change much (low scores=floor)
Time-Series Experiment
a single administration of a treatment is embedded within a series of observations; like having the subjects come over every night and one night giving them alcohol and observing them that night and every other night w/out alcohol
what is the major threat to internal validity for a time-series experiment design?
history: other events happen in the subjects' lives between the various observations
Equivalent Time-Samples Design
administer the treatment more than once during the series of observations (the same as time-series experiment but administer treatment more than once)
role-playing studies
alternatives to deception experiments in which subjects are asked to behave as if they were in a particular situation; subjects collaborate with experimenters and play the role of someone who is not in an experiment setting or who does not know the true purpose of the research