My expertise includes:
- PhD, psychology, Purdue University, 1988.
- Languages: Native speaker English, near fluency in French, beginner in German, Romanian, Spanish
- 25+ years' experience conducting and publishing numerous meta-analyses (also numerous primary-level studies)
- obtained U.S. National-Institutes-of-Health funding to conduct meta-analyses since 1995, including especially the Syntheses of HIV & AIDS Research Project (SHARP), funded since 1998
- developed software to facilitate conducting meta-analyses (DSTAT 1.x, 2.x)
- published numerous papers about meta-analytic methods (e.g., here)
- led graduate seminars on at the University of Connecticut
- frequently lead workshops on methods of meta-analysis, including such organizations as the Centers for Disease Control and Prevention, the Summer Institute in Social Psychology, and numerous universities, both in the U.S. and abroad (e.g., France, Germany, Switzerland).
- consulted with numerous principal investigators and prominent organizations regarding evidence-based projects and position stands
- honored as fellow of numerous associations (e.g., American Psychological Association, Association for Psychological Science, Society for the Psychological Study of Social Issues)
- inaugural and active member, Society for Research Synthesis Methodology
- editorial board member, Research Synthesis Methods, along with several others
The Meta-analytic Strategies I use most include:
- Weighted mean effect sizes based on fixed- (common) or random (variable) effects
- Moderator analyses (effect modifiers) based on fixed- or mixed-effects assumptions
- Elaborate coding of study methodologies (e.g., content of interventions delivered for a health promotion intervention)
- Use of geographical and temporal information to enhance understanding of meta-analytic phenomena
- Use of many different effect size metrics (especially d and r, but also the OR) and increasing use of the arithmetic mean when studies in a literature permit it
- Use of standardized vs. unstandardized effect sizes in meta-analysis
- Specialized expertise in deriving effect sizes from statistically impoverished reports (e.g., those that do not report a standard deviation)
Software I use most in conducting meta-analysis includes:
The substantive domains to which I have applied meta-analytic techniques include such topics as:
- Health promotion efforts, especially HIV prevention strategies, but also exercise interventions for cancer survivors
- Meta-synthesis of health promotion meta-analyses
- Efficacy of anti-depressant medications, including placebo effects
- Attitude-behavior relations
- Social influence topics such as involvement and persuasion and gender differences in leadership style
Quotation: "Science offers no gauges of the truth, only tools with which to divine it."
from p. 337 in: Johnson, B. T., Scott-Sheldon, L. A. J., Snyder, L. B., Noar, S. M., & Huedo-Medina, T. (2008). Contemporary approaches to meta-analysis of communication research. In Hayes, A., Slater, M. D., & Snyder, L. B. (Eds.) (Eds.) The Sage Sourcebook of Advanced Data Analysis Methods for Communication Research (pp. 311-348). Thousand Oaks, CA: Sage.