slide1
Download
Skip this Video
Download Presentation
Research methods in clinical psychology: An introduction for students and practitioners Chris Barker, Nancy Pistrang, and Robert Elliott

Loading in 2 Seconds...

play fullscreen
1 / 15

Research methods in clinical psychology: An introduction for students and practitioners Chris Barker, Nancy Pistrang, a - PowerPoint PPT Presentation


  • 146 Views
  • Uploaded on

Research methods in clinical psychology: An introduction for students and practitioners Chris Barker, Nancy Pistrang, and Robert Elliott. CHAPTER 9 Small-N designs. Small-N Designs: Overview. Single case experiments Naturalistic case studies. Traditions of small-N research.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Research methods in clinical psychology: An introduction for students and practitioners Chris Barker, Nancy Pistrang, a' - koen


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Research methods in clinical psychology:An introduction for students and practitionersChris Barker, Nancy Pistrang, and Robert Elliott

CHAPTER 9

Small-N designs

small n designs overview
Small-N Designs:Overview
  • Single case experiments
  • Naturalistic case studies
traditions of small n research
Traditions of small-N research
  • Single case studies in medicine and neuropsychology
  • Operant behaviourism
  • Shapiro Personal Questionnaire
  • Idiographic personality research
single case experiments n 1 designs
Single case experiments(N=1 designs)
  • AB design
  • Reversal (ABAB) design
  • Multiple baseline design
  • Changing criterion design
ab design
AB design

(Use OH with representation of design)

abab design
ABAB design

(Use OH with representation of design)

multiple baseline design
Multiple baseline design

(Use OH with representation of design)

changing criterion design
Changing criterion design

(Use OH with representation of design)

single case experiments data analysis and generalisation
Single case experiments: data analysis and generalisation
  • Data displayed on graph
    • but can use statistical methods
  • Generalisation:
    • Multiple single case design
    • Clinical replication series
naturalistic case studies
Naturalistic case studies
  • Narrative case studies
  • Systematic case studies
  • Time-series designs
narrative case studies
Narrative case studies
  • Can be used for:
    • documenting the existence of a phenomenon
    • disproving a universal proposition
    • demonstrating a new intervention
    • generating causal hypotheses
  • Problems:
    • reliance on memory
    • “narrative smoothing”
    • anecdotal
systematic case studies increasing internal validity
Systematic case studies:increasing internal validity

1. systematic, quantitative (versus anecdotal) data

2. multiple assessments of change over time

3. multiple cases

4. change in previously chronic or stable problems

5. immediate or marked effects following the intervention

(Kazdin, 1981; Hayes et al., 1999)

time series designs
Time-series designs
  • aim: to evaluate causal processes
  • use correlational methods
small n designs conclusions
Small-N designs: Conclusions
  • Good at:
    • looking at phenomena in depth
    • disconfirming theories by providing counter-examples
    • generating hypotheses/theory
  • Poor at:
    • establishing typicalities or general laws
    • but “clinical replication series” can test limits of external validity
methodological pluralism
Methodological pluralism
  • combine large-N and small-N approaches
  • Examples:
    • Rogers’ (1967) “silent young man”
    • Parry et al.’s (1986) “anxious executive”
ad