English and Literacy Education with a focus on reader response, reading comprehension, and written communication.
Improvement Science, Leadership Development, Educator Preparation, the Achievement Gap
Research includes the effects of television on young people, the use of media in teaching, politics and policy development relative to educational technology, and humanistic aspects of educational media.
Analysis of administrative data and survey data obtained under complex sampling designs, multilevel latent variable models, tests of mediation within a multilevel framework
 CAUSATION: Causal inference, quasi-experimental designs (matching designs, propensity score designs, regression discontinuity designs, interrupted time series designs), causal diagrams, structural causal models, causal mediation analysis, time-varying treatment regimes. ||  REPLICATION: Replication designs & reproducibility, design replication studies (within-study comparisons) for evaluating quasi-experimental designs. ||  SURVEY DESIGN: Factorial survey, experimental vignette designs.
Access and equity, teacher noticing and ethnomathematics
Prevention (polulation-based school psychology), social-emotional learning of K-12 students, professional issues in school psychology.
The dynamics of educational policies and practices, gender relations, and equity, particularly in Latin America, social change and gender, critical sociology.
Professor Sullivans research focuses on critical editions (from handwritten medieval manuscripts), annotated translations, and analyses of Medieval Greek texts, particularly military instructional manuals and hagiographical texts.
Social network models; statistical modeling; Bayesian statistics