From lecture 5 Flashcards
Three types of manipulations
- Variation of information
- Variations in subject behavior/experience
- Variation of intervention conditions
What are two situations that may be examined by assessing the utility of the manipulation check?
- If no differences between groups were found, then the strength of the manipulation could be that culprit
- Manipulation check is used to make sure conditions were distinct
Re. manipulation effect and observed effect on outcome (DV), what are the two data patterns that cause interpretive problems?
- We don’t see an effect on the DV, but the manipulation check worked as intended
- There was an effect on the DV, but the manipulation did not work/ remain constant across conditions
Strength of case-control design
- Suited to study infrequent conditions (e.g., particular diagnosis)
- Feasible and efficient in terms of cost/resources
- No attrition
- Can study direct influence and moderators
- May match cases and controls to get equivalent groups
- Can generate hypotheses about causal relationships
Weaknesses of case-control design
- May not truly est. that the cause preceded effect in time or whether they emerged together
- Causal relations cannot be directly demonstrated
- Possible sources of sample bias, depending on how the “cases” were identified
Five types of validity that convey the nature of qualitative research methods
- Descriptive validity
- Interpretive validity
- Theoretical Validity
- Internal validity
- External validity
Three basic ethical principles est. in the Belmont Report
- Respect (truly informed consent)
- Beneficence (justifiable risk exposure)
- Justice (societal concerns & scientific merit)
Four key characteristics of single-case design
- baseline assessment
- continuous assessment
- stable behavior
- different phases
What are the three types of multiple-baseline designs
Individuals, settings, behaviors
What are two of the four methods for quantitative data evaluation in a single-case design?
Magnitude (slope/level), rate (latency/mean)