Sentences with word «toolmaking»

Only the groups in which gestural or verbal teaching was allowed performed significantly above the reverse engineering baseline on several indicators of toolmaking skill, such as the total number of flakes produced that were long enough and sharp enough to be viable and the proportion of hits that resulted in a viable flake.

The find indicates that hominid populations there made big changes in toolmaking starting around 385,000 years ago, before Homo sapiens left Africa.

Nearly the size of Ireland, it was colonized 34,000 years ago by people with sophisticated toolmaking skills who came across a land bridge from Australia.

Genetic evidence suggests H. sapiens spread across South Asia only after 60,000 years ago, possibly influencing toolmaking techniques of the region's native Homo populations only at that late date, Petraglia suggests.

In the September Scientific American, devoted to human evolution, paleoanthropologist Ian Tattersall discusses how a capacity for toolmaking and other cultural developments worked in conjunction with luck to foster the success of Homo sapiens.

To test whether learning with language impacts which brain networks are involved in stone toolmaking, 15 of the 31 participants learned to knap stone via verbal instruction by watching videos of a skilled knapper's hands during individual training sessions.

Dramatic shifts in the East African climate may have driven toolmaking advances and the development of trading networks among Homo sapiens or their close relatives by the Middle Stone Age, roughly 320,000 years ago.

Groups of children at a range of ages play make - believe versions of what adults do and get in some actual practice at tasks such as toolmaking.

Ancient toolmaking approaches varied greatly from one part of Africa to another, with hominids employing diverse mixes of old - school chopping tools and newer, sharp points, says archaeologist John Shea of Stony Brook University in New York.

So researchers have used proxy indicators for symbolic abilities, such as early art or sophisticated toolmaking skills.

An additional 16 volunteers were shown the same videos without sound to learn toolmaking through nonverbal observation.

Erosion at Olorgesailie artifact sites has destroyed sediment from that time period, leaving the nature of toolmaking during that time gap a mystery.

That's when the Homo lineage split off from australopithecines, brains got bigger, and toolmaking started in earnest.

Those scattered, humanlike populations shared a common toolmaking ancestry, «but perhaps little else,» contends Adler, of the University of Connecticut in Storrs.

Human hand bones showed increased density in certain key spots associated with toolmaking.

In the 1st millennium bce the Marpole complex, a distinctive toolmaking tradition focusing on ground slate, appeared in the Fraser River area.

We provide expertise in fine toolmaking, machining, precision finishing of products and hardening and grinding which can be used to develop prototype instruments.

Every year Tryon teaches archaeology undergrads basic toolmaking; the students struggle to produce forms perfected long ago by human ancestors.

New Caledonian crows may force us to reassess the mental abilities of our first toolmaking ancestors.

Adults, but not necessarily parents, begin teaching hunting and complex toolmaking skills to teens.

Rather than considering toolmaking as a proxy for language ability, he and his colleagues explored the way that language may help modern humans learn to make such tools.

The researchers conclude that the successful spread of even the earliest known toolmaking technology, more than 2 million years ago, would have required the capacity for teaching, and probably also the beginnings of spoken language — what the researchers call protolanguage.

Major changes in Stone Age toolmaking in the area were less dependent on movements of H. sapiens out of Africa than investigators have often proposed, Pappu contends.

Newcomers mingled to varying extents with local groups, introducing new toolmaking approaches, researchers propose online January 31 in Nature.

One of these offshoots evolved long legs, toolmaking hands and an enormous brain.

Last year, ecologist Gavin Hunt of the University of Auckland in New Zealand was the first to show that handedness also plays a role in animal toolmaking.

The remarkable toolmaking talent of a New Caledonian crow called Betty has challenged the chimpanzee's reputation as the most proficient toolmaker in the animal world.

«They've reached levels of toolmaking proficiency generally associated with an animal with a big brain, dextrous hands and symbolic language — in other words humans,» says Gavin Hunt, a biologist at the University of Auckland.

Perhaps they wanted to keep the stinky fumes of fires for cooking or toolmaking away from their home caves, and so they lit those fires farther afield — where the evidence more easily washed away, or hasn't yet been found.

A 790,000 - year - old hominid settlement in northern Israel, excavated by archaeologists from the Hebrew University of Jerusalem, appears to have been divided into distinct functional spaces, with a hearthside food preparation area and a spot dedicated to flint toolmaking.

And in 1997, a landmark study of a composite hand skeleton of Lucy's species, A. afarensis, suggested that Lucy lacked a full precision grip 3.1 million years ago, but that her species had developed several but not all of the traits in its hand bones that are associated with the precision grip required for habitual toolmaking.

Then, much later, when the ice ages began, toolmaking became common and the brain began to enlarge and reorganize.

Cost Engineer — Cost Estimator Automotive & Industrial This role will ideally suit a costing professional with a technical / engineering / toolmaking background.

If that's right, then what's a bird - brained New Caledonian crow doing with such advanced toolmaking skills?

Hominids start to use stone tools regularly, created by splitting pebbles — this starts Oldowan tradition of toolmaking, which last a million years

These two crows are in their third year at Oxford University, but they haven't been taking an advanced course in toolmaking.

Nobody is suggesting that toolmaking has common origins in humans and crows, but there is a remarkable similarity in the ways in which their respective brains work.

Eren started making stone tools in college classes, but to become an expert, he trained at the University of Exeter under Bruce Bradley, as well as with Jacques Pelegrin and Robert J. Patten, all renowned for their toolmaking skills.

Another weakness of the study, Stout adds, is that the subjects were given only 5 minutes to learn the toolmaking techniques, and then no more than 25 minutes to produce Oldowan flakes.

Kacelnik says that Betty's toolmaking is too complex to have happened by chance.

Rose says this distinctive method of toolmaking, classified as «Nubian Middle Stone Age,» is unique to a region of Sudan in northeast Africa and has never been found outside the Nile Valley in northeast Africa.

For much more on the toolmaking crows of New Caledonia read the Look!

The finding raises many questions about how «brainy» these crows are and how their toolmaking abilities evolved.

Some stone flakes found at Misliya Cave were burned, perhaps during the toolmaking process.

Scientists say this shows planned, deliberate tool use, and that chimps can think ahead and be creative in their toolmaking!

Although meat eating helped to shape the evolution of human brains, behavior and toolmaking, our early ancestors seem to have been better scavengers than hunters

Researchers report online today in the journal Primates that this is strong evidence of planned, deliberate tool use among chimps, adding to evidence that these primates can think ahead and be creative in their toolmaking.

The toolmaking required a level of hand motor control that suggests that changes in the brain and spinal tract needed for such activity could have occurred before 3.3 million years ago, the authors said.

«It's been proposed that Neanderthals depended on visual - spatial abilities and toolmaking, for survival, more so than on the social affiliation and group activities that typify the success of modern humans — and that Neanderthal brains evolved to preferentially support these visuospatial functions,» Berman explained.