Moreover, genetic evidence, based on distinct DNA coding that is known to be related to brain functions in modern humans, suggests at least some cognitive contrasts between Neanderthals and Homo sapiens. And demographic differences (small, low-density populations) may have hindered Neanderthals’ cultural evolution, compared with the wider networks established by early modern human groups, initially in Africa, and subsequently worldwide.
此外，基于已知的与现代人大脑功能有关的不同的DNA编码的遗传学证据表明，尼安德特人和智人之间至少存在一定程度的认知差异。而人口分布差异（人口少、密度低）大概是制约尼安德特人文化进步的原因，与之相比，早期现代人群体——最初是在非洲，随后在全世界——建立了更广的网络。