Methods and Tools of Data Collection Following three methods are employed in collecting data from primary sources. The cost of conducting the study with the help. Observation Methods Of Data Collection In Behavioral Science Behavioral Science Data Collection Observation Numerical - making this a less time-consuming method compared to naturalistic observations. . It is an economical way of accumulating information. Choose your data collection method. The nature of the observation could be accomplished either as a complete observer an observer as a participant a participant as an observer or as a complete participant. The job analyst on the basis of observation carefully records what the worker does how heshe does and how much time is needed for completion of a given task. While primary data collection is considered the most authoritative and authentic data collection method. Surveys observations archival research and second