A Framework for a Comparative Science of the Mind
We study cognition in perspective, at scale, and across development. Through systematic comparison across species and cultures, we aim to understand how the human mind emerges from shared biological foundations and adapts to diverse social and ecological environments.
A Comparative, Developmental, and Cultural Science of the Mind
“There are two sciences that must come to the aid of general psychology: the developmental history of the soul and comparative psychology. The former must trace the gradual development of mental life in humans, while the latter must depict the differences in the same across the animal kingdom and the cultures of humankind.” — Wilhelm Wundt (1862), Beiträge zur Theorie der Sinneswahrnehmung (translated from German)
More than a century after Wilhelm Wundt articulated this agenda, psychology has produced powerful insights into the human mind. Yet his vision of an encompassing research framework for experimental psychology has only been partially realized. Many central theories continue to rest on a narrow empirical and conceptual base. Human cognition shows extraordinary variability across development, populations, and ecological contexts, but this variability has rarely been treated as epistemically central. As a result, psychology has often mistaken local regularities for general principles. By relying disproportionately on homogeneous samples and decontextualized tasks, the field has underestimated the adaptive flexibility of the human mind and, in consequence, de-emphasized one of its core functions. At the same time, cognition has frequently been studied in isolation from its biological foundations, reinforcing assumptions of human exceptionalism and obscuring continuities with other species. Addressing these limitations does not require incremental adjustments, but a coherent research framework that rethinks how knowledge about cognitive systems is generated.
Cognition
The Department of Comparative Cultural Psychology approaches cognition as a property of agents embedded in social and ecological contexts. We define cognition as the computational processes that structure how organisms generate robust, goal-directed behavior under uncertainty, given limited information and resources. A central function of cognition is adaptation based on experience: cognitive systems change as a function of interaction with their environments across development and evolutionary time. Cognition is therefore the means by which organisms engage with their environments, coordinate with others, and flexibly adjust to changing social and ecological conditions.
A Dual Reorientation: Biology and Culture
The Department of Comparative Cultural Psychology starts from a simple premise: understanding the human mind requires embedding cognition simultaneously in its biological and cultural context. Cognitive diversity is not a complication for psychological theory—it is one of its core explananda: Human cognition is uniquely adapted to cultural diversity and, in turn, actively contributes to creating it. An adequate theory of mind must therefore explain how cognition develops within biological constraints, how it varies across populations, and which universal foundations enable this adaptive process. This requires treating biological continuity and cultural diversity as complementary sources of theoretical insight, and building the methodological capacity to study both rigorously.
Culture and Cognition
We study culture as a system of socially transmitted practices, norms, and knowledge that both emerge from cognition and reorganize it. Culture is not an external influence on the mind. It emerges from minds, while it is also one of the primary environments in which human cognition develops, adapts, and diversifies.
Cultural systems structure how individuals attend to the world, learn from others, coordinate social life, and act under uncertainty. They shape which problems are salient, which strategies are available, and which forms of behavior are rewarded or sanctioned. Human cultures preserve and transform solutions to recurrent ecological and social challenges through social learning, imitation, teaching, and norm enforcement. Culture is therefore not merely expressive or symbolic. It is an adaptive system that structures the informational and developmental worlds in which cognition unfolds.
Cultural diversity is not an obstacle to psychological theory. It is a primary source of insight. Much of psychology has relied on samples drawn from industrialized, schooled societies, implicitly treating the resulting patterns of cognition as universal. By studying cognition across culturally diverse populations—including Indigenous and underrepresented communities—the department treats cultural variation as epistemically informative. Differences across human populations function as natural experiments that reveal how shared cognitive mechanisms are expressed, combined, and reorganized under different social and ecological conditions. At the same time, capacities that remain stable across cultural contexts provide evidence for universal foundations of the human mind.
Animal Culture
Culture is not exclusively human. Comparative work with great apes reveals socially learned traditions and stable population-level behavioral variation. These continuities are essential for placing human culture in evolutionary perspective while clarifying which combinations of mechanisms support cumulative cultural dynamics in our species.
Chimpanzees can acquire complex behaviors through social learning that they fail to invent individually, demonstrating that socially transmitted knowledge can expand behavioral repertoires beyond individual innovation. This challenges views that reduce animal traditions to repeated individual rediscovery and provides evidence that animal cultures can depend on socially maintained information rather than latent individual solutions.
At the same time, the contrast between human and non-human culture remains theoretically decisive. Human cumulative culture depends on a distinctive configuration of mechanisms, including high-fidelity social learning, norm sensitivity, explicit teaching, and forms of representation that allow shared practices to be reflected on, stabilized, and deliberately transformed. Studying animal culture therefore serves a dual purpose: it reveals continuities in the foundations of culture while clarifying the conditions under which cumulative cultural systems emerge.
Development as the Temporal Interface of Mind
We study development as the process through which cognitive systems emerge, reorganize, and stabilize across the lifespan. Development is the temporal interface between biology, experience, and culture. Cognitive systems do not appear fully formed. They are assembled over time through structured interaction with social partners, material environments, and culturally organized practices. Development links evolutionary history to individual experience.
Development has privileged explanatory value because it reveals causal relations among mechanisms. By tracing when abilities emerge, how they interact, and where trajectories diverge, we can identify how cognitive systems are built rather than merely describing their mature form. Delays, errors, transitions, and individual differences are not imperfections to be explained away; they are sources of evidence about the structure and limits of cognition.
Development, Human Uniqueness, and Comparative Perspective
Uniquely human cognition does not arise from isolated end-state capacities alone. It emerges through developmental reorganizations that enable explicit, flexible, and culturally scaffolded forms of reasoning, communication, and social coordination. By locating human uniqueness in developmental reorganization rather than in isolated mature abilities, the department advances a biologically grounded and evolutionarily plausible account of what distinguishes the human mind.
Understanding development also requires a comparative perspective. Many foundational cognitive mechanisms are shared across species, and many developmental processes are not uniquely human. The department therefore studies development in humans and non-human great apes to identify which developmental pathways are conserved and where trajectories diverge. Longitudinal and cross-sectional studies of great ape cognition reveal both continuities—such as early-developing social sensitivities—and clear discontinuities, especially in the emergence of abstract and metarepresentational cognition. Studying development across species allows us to distinguish species-general constraints from human-specific reorganizations and to anchor claims about uniqueness in comparative evidence.
Studying Cognition in Perspective, at Scale, across Development and Together
The department studies cognition in three mutually reinforcing ways. It studies cognition in perspective, through systematic comparison with other species. It studies cognition at scale, across culturally and ecologically diverse human populations. And it studies cognition across development, by tracing how mechanisms emerge, interact, and reorganize over time.
This work depends on infrastructures that support large-scale, developmentally sensitive comparative research, including the Wolfgang Köhler Primate Research Center, long-term sanctuary collaborations, zoo-based networks, and open comparative databases.
Studying cognition at scale by conducting research across diverse human societies—including Indigenous and underrepresented communities—requires long term collaborations with cultural communities and local institutions, commitments to local capacity building and collaborative networks like the cognitive science accelerator or ManyBabies consortia.
A comparative and developmental science of the mind also requires changes in how research is conducted. The department contributes to collaborative initiatives such as the Psychological Science Accelerator, ManyBabies, and ManyPrimates, extending these efforts by incorporating data from non-industrialized human communities and multiple great ape populations. Through these collaborations, and through infrastructures such as GrApeNet, EVApe Cognition, ChildLens, and PhysioTip, the department works toward a science of mind that is cumulative, transparent, reproducible, and scalable.
Changing Standards of Evidence
Beyond producing new data, the department contributes to improving the standards by which psychological knowledge is generated and evaluated. Through a series of metascientific initiatives, we have documented persistent biases in developmental psychology, including the overrepresentation of children from a narrow set of cultural contexts, limited contextualization of samples, and unequal recognition of research conducted in underrepresented communities. Complementary analyses show that peer reviewers and editors continue to apply different evaluative standards depending on where data originate.
These findings inform concrete recommendations. In addition to empirical analyses, the department has contributed to the development of ethical standards for cross-cultural comparison in psychology and to broader debates on open science and good scientific practice. A credible science of mind must not only expand what it studies, but also rethink how evidence is evaluated, whose data count, and which forms of variation are treated as theoretically informative.
Training for a Comparative Science of the Mind
Sustaining this research framework also requires rethinking how psychologists are trained. The department’s teaching initiatives address both the replicability crisis and the generalizability crisis in psychology by embedding comparative and cross-cultural collaboration directly into scientific training.
In collaboration with the University of Namibia, students work in research tandems to design and conduct cross-cultural replication studies in developmental psychology. Projects are jointly developed, independently implemented across sites, and published with student co-authorship. Complementary field-based teaching projects, including long-standing collaborations with the Chimfunshi Wildlife Orphanage Trust, integrate behavioral research, education, conservation, and community engagement, demonstrating how research and teaching can reinforce one another while building sustainable partnerships.
Taken together, these commitments define the department’s research framework. By studying cognition in perspective, at scale, and across development, the Department of Comparative Cultural Psychology works toward a science of the mind that is theoretically grounded, empirically inclusive, and methodologically robust. This framework provides the foundation for the department’s research areas and projects, and for its contribution to understanding the origins and diversity of the human mind.
