The researchers used a psychological assessment tool to test the validity of the study.

研究人员使用心理评估工具来测试研究的有效性。

So, a group of researchers in 2013 collected data from over 1000 participants to develop a psychological assessment tool which specifically measured FOMO.

因此，2013年，一组研究人员收集了1000多名参与者的数据，开发了一种专门测量错失恐惧症的心理评估工具。

Coursework includes areas such as ethics, statistics, individual differences, and the biological, cognitive-affective, and social bases of behavior, as well as specific training in psychological assessment and therapy.

课程包括道德、统计学、个体差异、行为的生物学、认知-情感和社会基础等领域，以及心理评估和治疗方面的具体培训。