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There are dozens of different models that attempt to explain human behavioral change .

有几十种不同的模型来试图解释人类行为的改变。

This has led to an explosion in the creation of large records of behavioral data .

这些导致关于行为的数据记录爆炸式地创建。

He personifies six decades of behavioral research , his studies repeatedly re-shaped the field of psychology .

他从事了六十年的行为的研究，他的研究多次改变了心理学领域的认识。

Mutationsthe physical and behavioral changes that make natural selection possible happen at the level of dna and genes .

突变物理和行为的改变，也可能使自然选择发生在dna和基因的水平上。

Early-stage symptoms like shaking and difficulty with walking eventually may progress to cognitive and behavioral problems such as dementia .

早期的症状，如行走颤抖和困难，最终可能发展为认知和行为的问题，例如痴呆。