Final answer:
The child psychologist uses the cognitive perspective to study how children interpret their parents' divorce, focusing on their thought processes and emotional responses related to their developmental stages.
Step-by-step explanation:
A child psychologist focusing on how children interpret the divorce of their parents is using the cognitive perspective. This perspective is concerned with the relationship between thought and behavior, particularly how individuals think and reason. In the context of divorce, cognitive psychologists would examine how children comprehend and cope with their parent's separation across various developmental stages. This includes understanding their emotional responses and the cognitive processes associated with those responses. For instance, school-aged children might struggle to comprehend the reasons behind the divorce while older teenagers may have a better grasp on the conflict but still experience emotional challenges such as fear and loneliness. It is crucial to consider the cognitive development in children and how it affects their understanding of complex situations like divorce.