Final answer:
The method of data collection described in the question is a structured observation. Observers are given a checklist and specific tasks to observe and record behaviors.
Step-by-step explanation:
The method of data collection described in the question is a structured observation. In a structured observation, observers are given a checklist and specific tasks to observe and record behaviors. This method allows for the collection of specific data in a controlled manner. An example of structured observation is the Strange Situation procedure used to evaluate attachment styles between infants and caregivers.