填空题

Before Lyubomirsky carried out her own research, scientists investigated happiness mainly through ______.

【参考答案】

correlational studies
<上一题 目录 下一题>
热门 试题

填空题
Because little research had been done on the explanation of happiness, before going into the lab, Lyubomirsky had done some ______.
填空题
In the happiness pie chart, error factors account for 10 percent.
相关试题