a) Tool makers and users – The Acheulean tool tradition is associated with the homo-erectus life-way. The stone tools were largely made out of quartz, a difficult material for chipping and consisted a variety of chopping tools and retouched flakes in simple forms. Bone and wooden tools, and tools like spears have also been discovered.
b) Use of fire –Evidences from China prove that homo-erectus were the first user of fire. They may have used fire for warmth, protection from wild animals and hunting. It also provided for centres of increased working capacity in terms of working hours. It may have aiso helped in splitting stones from ;bigger rocks. On the basis of smaller teeth and faces we can conclude that they used to cook food and prepare it more than ’habilis’did.
c) Hunting – Tools indicate evidences of big-game hunting. The simple technology would have allowed the transportation of meat over distances of few or tens of kilometers. And also there must have been collective or cooperative hunting.
d) Cannibalism – Some fractured hominid bones and skulls with enlarged foramen magnum from China indicate technical removal of human brains from skull. E.A.Hoebel has suggested that cannibalism was practiced among homo-erectus for ritualistic and survival purposes.
e) Language and Communication – The practice of tool making and its use, hunting and group-living acted as selective forces and those with developed memory-sites in occipital lobe, thinking-sites in frontal lobe and different motor areas in cerebral cortex were favoured by the natural selection. This resulted in gradual development of brain signifying development of language as means of communication and thinking process.
f) Sexual behaviour –Although females approach males in body-size,there is marked differences in the facial features of males and females. Males had bigger faces with more massive brow ridges like apes, Thus, “intra male competition” was more biologically regulated,in contrast to homo-sapiens. The slow pace of technological advancement also indicate a non-human type of behaviour.