He says his team's research is influenced by questions in evolutionary biology about why people and groups use costly punishment.

VOA: special.2009.03.03

the first reason that we gave and we are just finishing up is because the question that we ask, whether it's the research questions that we ask, or the questions that we ask of ourselves, or our partners,matter.

我们之前讨论完的第一个原因是,我们提出的问题很重要，无论它是不是我们的研究问题，或我们为自己所问的，或为我们的伴侣问的。

哈佛公开课 - 幸福课课程节选

especially as I am trying to develop my own thoughts and my own research questions for my future career.

尤其是就我未来职业方面，我正在尝试形成自己的观点，提出我的研究问题。

有印象的教授 - SpeakingMax英语口语达人

These were some of the questions Charles Darwin asked himself over years of research in botany,zoology and geology.

VOA: special.2009.02.25

Most scientists involved in climate research answer "yes" to both questions.

VOA: special.2010.01.19