Tools and Evolution

Complete the text with missing information.

Choose one of these options to complete it. 

1. since these ancient people

2. modern human communication and teaching

3. how to make the ancient tools

4. gene culture co-evolution

5. This meant they had to develop advanced verbal skills, including language

6. Another group was allowed to watch someone make the tools

7. create and use these ancient tools more effectively

8. weren´t able to acquire the skills

9. This study suggests that methods of

10. they were tested 

A couple of million years ago our ancient human ancestors created the world´s first tools when they broke some rocks into sharp pieces so that they could slice apart and butcher animals for food. Our early ancestors needed to come up with effective ways to communicate and teach others how to make and use tools.

A new study by an international group of researchers suggests that these tools became a force that drove evolution. communicating among some of our most ancient ancestors may have been a lot more complex than previously thought. So much so that the earliest concepts of teaching and maybe even the development of some kind of predecessor to modern language took place about 1.8 million years ago. 

"Our findings suggest that stone tools weren´t just a product of human evolution, but actually drove it as well, creating the evolutionary advantage necessary for the development of " said Thomas Morgan, lead author of the study and a postdoctoral researcher in psychology at the University of California, Berkeley. According to Morgan, his team´s research shows that even our earliest predecessors were able to learn how to of they had a teacher, especially one who had some language skills.

It´s possible that more advanced tool technology could have been devised over the hundreds of thousands of years the original tools were in use. However, were still so busy coming up with language and teaching methods, Morgan and his group believes that they were unable to share any possible newer technology with others.

To arrive at their findings, the researchers recruited students and taught them . One group of participants had to teach themselves, and only got to look at previously fashioned tools without the benefit of guidance. , and interact with them. In the remaining groups, teachers instructed students hot to make the tools, using gestures for one group and verbal language for the others. Once all the participants had been "taught" how to make the tools, to see how skillfull they were at making them. 

The study found that participants who had to figure things out for themselves or just watched someone create the tools needed to make the tools as easily as others who were explicity taught.

Human evolution is not just a story of our ancestors evolving in response to environmental conditions, says Morgan. Our genes and our culture evolved in response to each other in one single process, sometimes known as

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