What type of observation is characterized by no interference from the researcher?

The appropriate choice is Naturalistic Observation, which is characterized by observing subjects in their natural environments without any interference or manipulation from the researcher. This method allows researchers to witness behaviors as they occur naturally, providing insights that might be influenced by a controlled setting or researcher presence.

In Naturalistic Observation, the researcher's role is largely passive, which helps to ensure that the behavior being studied is authentic and not altered by the observation itself. This approach is often used in psychology to study social behaviors, animal behaviors, or developmental stages in children, where context matters significantly.

Other types of observation, such as Controlled Observation, involve the researcher creating specific conditions to elicit certain behaviors, which can introduce bias or artificiality. Field Observation might involve a broader context but can sometimes include researcher interaction. In Participant Observation, the researcher actively engages in the setting and becomes part of the group being studied, which can influence the behavior of those being observed. Overall, Naturalistic Observation stands out because it aims to minimize researcher involvement, yielding data that more closely reflects genuine behavior.