PRES Associates offers a range of research design and analysis services designed specifically to meet the unique needs of our clients. Expertise includes, but is not limited to, designing studies that are: experimental, quasi-experimental, correlational (e.g. observational and longitudinal), and descriptive (e.g. case studies, surveys, etc.). Our extensive experience also includes conducting power analysis, sampling, literature review synthesis and meta-analysis, and a wide-range of data analytical techniques (including descriptive, categorical data analysis, general test theory, hierarchical learning modeling, longitudinal analysis, multi-level analysis, multivariate analysis, regression models, and more).