Which characteristic is essential for an observer during sessions?

Being nonjudgmental is essential for an observer during sessions because it allows for an objective view of the behaviors and interactions being observed. This characteristic ensures that the observer can accurately record and interpret the behaviors without letting personal biases or preconceived notions interfere. A nonjudgmental stance promotes a safe and supportive environment for the individuals being observed, enabling a clearer understanding of their actions and developmental needs. This approach encourages open communication and trust, which are vital for effective observation and assessment processes in behavioral observation and screening.

In contrast, being highly critical, having biases, or being overly involved in activities can cloud an observer's ability to accurately assess and document observations. These traits can lead to skewed perceptions and prevent the observer from noticing important behaviors or changes that are critical for developmental assessments.