Week 7_group design1

Week 7_group design1 - ScWk 240 Research Methods and Design...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
ScWk 240 Research Methods and Design Week 7 October 10, 2008 San José State University Edward Cohen, Ph.D. Introduction Group Research Design: Causality and Internal Validity I. But first: Recruitment and Retention Procedures—Vulnerable Populations, and Ethnic Minority Populations Student Report ***Name a few strategies that helped the researchers recruit Latino adolescents for this study. Did anything surprise you about what the youth suggested? A. Community input into research design and ongoing advisory function (including community leader permission, as appropriate to the community) B. Culturally and linguistically appropriate recruitment materials C. Use of community representatives to assist in recruitment, as appropriate D. Flexible time and place of interviews or surveys 1. Accommodations for after work hours 2. Accessible site 3. Day care & transportation considerations 4. Culturally appropriate food E. Age- and culturally appropriate procedures to maintain participation (e.g. see Villarruel, et al. article about recruiting Latino adolescents) F. Î For the Final Paper your Method section (under Study Procedures) will include your proposed recruitment strategies G. Î Also, remember that your recruitment strategies have to comply with the requirements of proper Informed Consent, e.g. no coercion, participants fully informed, voluntary, etc. Student Report *** The authors use a research study (the efficacy of an intervention to reduce HIV sexual risk) as an example of recruitment strategies. Can you name the actual research design? (It’s not mentioned in this article.) 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
II. Establishing Causality A. What is “causality”? The finding that change in one variable leads to change in another variable. B. Here we are talking about explanatory research, and for the most part evaluative research. 1. Primary independent variable: “treatment” 2. Dependent variable: one or more “outcomes” C. Î Do all of your projects need to address causality? No—only if the research questions imply it. D. Pre-requisites for determining a causal relationship between two variables? 1. The cause precedes the effect in time, e.g. First participants receive group therapy (independent variable), then a lowered level of group participants’ anxiety (dependent variable) occurs. If participants’ anxiety started being reduced prior to the initiation of group therapy, the causal connection is weaker. Other examples: a) Parent education classes to improve parenting skills and prevent
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.
  • '10
  • NoProfessor
  • Causality, internal validity, Experimental Group, Causality‚ÄĒdefinition Control group Experimental group

{[ snackBarMessage ]}

Page1 / 6

Week 7_group design1 - ScWk 240 Research Methods and Design...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online