This document discusses quantitative and qualitative consumer research methods. Quantitative research uses methods like surveys and experiments to collect empirical data from large samples, enabling marketers to predict behavior. Qualitative research uses small samples and methods like interviews and focus groups to gather subjective data and insights. Both approaches have their tradeoffs in terms of sample size, generalizability, and objectivity versus depth. The document also outlines various data collection techniques, research design considerations, and steps in the consumer research process.