This document provides an overview of research in evolutionary perspectives. It discusses how research is a way of thinking that involves identifying and refining questions to find answers through inductive and deductive reasoning. Research can be conducted at different levels with constraints. New statistical methods and tools like analysis of variance, meta-analysis, multidimensional scaling, path analysis, and neuroimaging have expanded the types of phenomena that can be studied. Interdisciplinary teams now tackle questions across disciplines using high-speed computers and connectionist models. Science is constantly evolving as new questions arise and techniques develop.