This document discusses various methods for collecting data through observation studies. It describes different types of observation including behavioral, non-behavioral, active, passive, direct, indirect, and participant observation. It outlines advantages such as collecting original data in natural environments and limitations like being an expensive and slow process. Guidelines are provided for selecting observers and conducting observational studies, including determining who and what to observe, sampling techniques, and recording data.

1. Data Collection Methods: Observation Studies Deepak Khazanchi