Because they cannot verbalize or fill out questionnaires, indirect techniques of naturalisticobservation are used as the primary means of determining what infants can see, hear, feel, and so forth.
Psychologists use a range of techniques to study the human mind and behavior, including naturalisticobservation, experiments, case studies and questionnaires.
心理学家使用各种技术来研究人的思想和行为,包括自然观察,实验,个案研究及问卷调查。
3
Of course, both naturalistic and laboratory observation are important in regard to the advancement of scientific knowledge.