This document contains slides from a lecture on research concepts. It defines what a researcher is, as well as different types of researchers like social scientists and clinical scientists. It also defines key terms like demography, census, indexes, and disciplines involved in research like psychology, philosophy, and records. Different fields of research are explored such as social sciences, management sciences, environmental sciences, and clinical research. Indexes for measuring economic indicators are also outlined such as the stock market index and consumer price index.