Which of the following is NOT a problem associated with observational methods?

A) Reactivity may compromise validity.
B) People may change their behaviour if they know they are being observed or recorded.
C) Observers may begin to develop their own theories of behaviours mid-way through the observation.
D) Observer drift may occur.
E) Observation is expensive in terms of time and scoring procedures.

Observational Methods

Research techniques that involve watching participants in natural or contrived situations to gather data about their behavior.

Observer Drift

A phenomenon in which there are gradual changes in the way an observer measures or perceives phenomena over time, leading to inconsistencies.

Reactivity

The change in behaviour often seen when people know they are being observed or filmed. One of the difficulties inherent in in vivo observation and analogue observational settings.