Final answer:
The evolutionary theory of psychology is most likely to have the motto "nature not nurture". This theory focuses on how universal patterns of behavior and cognitive processes have evolved over time, attributing variations in cognition and behavior to genetic factors and natural selection.
Step-by-step explanation:
The theory that would most likely have the motto "nature not nurture" is the evolutionary theory of psychology. This theory focuses on how universal patterns of behavior and cognitive processes have evolved over time. It suggests that variations in cognition and behavior are a result of genetic factors and natural selection. For example, certain innate behaviors like seeking approval from an in-group are believed to be influenced by our species' evolutionary history. Environmental factors, such as culture, may shape the criteria of approval and disapproval within that in-group, but the tendencies for social behavior are thought to have a genetic basis.