What is one requirement for effectively collecting data through observation and interview methods?

Extensive training and professional expertise

The correct answer is option 2: Extensive training and professional expertise

When collecting data through observation and interview methods, one key requirement is extensive training and professional expertise. This is because:

• Observing behavior accurately requires the ability to notice subtle cues and interpret them objectively.

• Conducting effective interviews demands skills such as building rapport, asking appropriate questions, and avoiding bias.

• Both methods involve subjective judgment, so proper training ensures that the data collected is reliable and valid.

"Collecting useful data through observation and interview methods requires extensive training and professional expertise. Assessors need to be skilled in conducting interviews, observing behaviors, and interpreting the collected information accurately."