Comparative Cognition
Competence and Cognition
What Differentiates the Human Mind
A synthesis across Premack, Sterelny, Pontzer, and Avital and Jablonka examines what distinguishes the human mind from the minds of other species. The argument identifies competence rather than general intelligence as the primary differentiator, isolating language and social cognition as the evolutionary mechanisms that accelerate human adaptation.
The Question
“What is the main difference between human minds and the minds of other animals? What explains this difference? Is this a sharp boundary or is it relatively superficial?”
Competency is the main difference, expressed through language and social cognition. The boundary is real but not sharp; humans and other species diverged from a common ancestor and have since evolved on different trajectories.
“The advanced function most clearly associated with the reorganization of the human brain is complex social cognition” (Premack 2007). “Our divergence from great ape norms is still more extreme; in particular, in the cooperative aspects of our social lives” (Sterelny 2013).
The argument develops by identifying the two pillars of human competence and the feedback loop that compounds them across generations.
Two Pillars of Human Competence
Sterelny argues virtually all newly discovered human singularities are located in areas associated with complex social cognition or language.
Language
Communication and information sharing
Hominins gained the capacity to verbally communicate after diverging from the chimpanzee-bonobo line (Pontzer 2013).
Humans cooperate in sharing information, not only in securing resources and guarding against danger (Sterelny 2013).
Communication enabled collective information gain from the environment and reshaped the environment in turn.
Social Cognition
Mental state attribution and cooperation
Non-human animals attribute only goal-seeking and perception; humans attribute a broader range of mental states (Premack 2008).
The cooperative aspects of human social lives are the singular feature most divergent from great ape norms (Sterelny 2013).
Cognitive cases like teaching, causal reasoning, short-term memory, planning, and theory of mind show consistent limits in non-human animals.
The Positive Feedback Loop
Communication and social cognition do not act in isolation. They compound each other across generations and accelerate hominin divergence from the chimp-bonobo lineage.
Communicate
Hominins share complex information beyond resource and danger signals.
Teach
Investment in offspring transmits technical competence; the apprentice model (Sterelny) describes evolutionary change along the hominin branch.
Shape
Humans interact with and mold their physical, biological, social, and technical environment.
Adapt
Reshaped environments select for further communication and social cognition, returning to step one.
Sterelny on the rapidity of divergence
“Expansion is cause as well as effect. Human environments became less stereotyped and more complex, in part as a result of human’s own activities. These feedback loops explain the rapidity of the hominin divergence from the chimpo lineages.”
A Real but Not Sharp Boundary
Humans and great apes share a common ancestor. The two branches evolved differently, but evolution remains ongoing and the differences are differences of degree along separate trajectories.
Common baseline
“Hominin evolution built on an already impressive great ape baseline” (Sterelny 2013). Many cognitive capacities were in place before the split.
Different trajectories
Chimpanzees may eventually evolve more sophisticated communication within their species, or that capacity may already exist in a preliminary form awaiting evidence.
Humans
Apprentice model
Hands-on offspring investment, cumulative cultural transmission, and rapid environmental reshaping. The behavioral inheritance system (Avital and Jablonka 2000) provides the raw material on which natural selection acts.
Chimpanzees and bonobos
Limited transmission
Male chimps and bonobos do not invest in offspring (Sterelny 2013). Learned traits pass less reliably, slowing the rate at which new adaptations can spread.
Conclusion and Takeaways
Competence, not intelligence
The argument is not that humans are more intelligent. Their competence is particularly different because of evolutionary deviances that produced communication and social cognition.
Transmission matters
Hands-on offspring investment and teaching let new traits spread quickly. Without that transmission, generations restart from a figurative square one.
Boundary is permeable
Other species may already possess preliminary forms of these capacities or may evolve them in the future. The grammar of comparison should respect evolutionary timescales.
Key Takeaway
The main difference between human and animal minds is competence, specifically the capacity to communicate and form social relationships. Coupled with hands-on offspring investment, that competence accelerates adaptation rather than separating the human mind from animal minds in kind.
