In other words, when did Homo sapiens become behaviorally modern?

换句话说，智人是什么时候在行为方面变得现代的呢？

Plus, there was no eureka moment when we became behaviorally modern.

另外，当我们的行为变得现代化时，并未出现顿悟时刻。

But what about the most defining characteristics of behaviorally modern humans: abstract thought and creativity?

但是，现代人抽象思维和创造力的行为特征是什么呢？

So it's crucial for a female bird to pick as a mate the most promising father—both genetically and behaviorally.

因此对雌鸟而言，不管是基因角而行为角度择偶最为关键的就是寻找一位最有前途的父亲。

Sometimes hidden breeds may not manifest physically but behaviorally, Hughes says. Knowing what makes your dog tick can be helpful.

“有时候隐藏的品种可能不会在身体上表现出来，而是在行为上表现出来。”“知道你的狗动力来自哪里非常有用。”

Behaviorally, they couldn't be further from the North American bigfoot.

在行为上，他们与北美大脚怪相去甚远。

Understanding how we became behaviorally modern can help us understand how, when, and why our ancestors migrated across the earth.

了解我们的行为如何演变成具有现代性，能帮我们理解祖先是如何、何时以及为什么在地球上迁移的。

Professor：For today’s discussion, we’ll review the case study on how some animals have behaviorally adapted to their environments.

教授：在今天的讨论中，我们将回顾一些动物如何通过行为适应环境的案例研究。

The researchers recorded whether the follower sallied forth more frequently with the fish that was behaviorally similar or the one that was different.

研究人员记录了跟随者采取行动的频率，看它们是跟随行为相似的鱼出现的次数更多，还是跟随性格相反的鱼出来的次数更多。

Behaviorally modern human beings-that is, people who can speak and make art and organize complex activities--have existed for only about 0.0001 percent of Earth's history.

从行为科学的意义上说——也就是能够说话，从事艺术，组织复杂而又丰富多彩的活动——现代人类存在的时间只占地球历史的万分之一——实在短得可怜。

So the consensus is that humans were only definitely behaviorally modern 40,000 to 50,000 years ago, when symbolic art and artifacts start to appear more consistently.

因此，人们的共识是，人类在4万到5万年前时，行为表现才具有现代性，那时象征性艺术和人工制品开始更加一致地出现。

" These are only subjects who do not have sleep disturbances but have what we would call behaviorally induced insufficient sleep, " he said.

“这些只是没有睡眠障碍但我们称之为行为诱发的睡眠不足的受试者， ” 他说。

And that's a very specific way of giving somebody feedback that's both behaviorally specific, and includes the reaction of other person's behaviors, your reactions to their behaviors.

这是一种非常具体的方式，给别人反馈，既有行为上的具体，也包括别人行为的反应，你对他们行为的反应。