Cross-Cultural Cognition

What does WEIRD stand for and why is it a problem for psychological research?

Western, Educated, Industrialised, Rich, Democratic. Most psychology research uses participants from these cultures (typically US/European university students). The risk is that findings are assumed to be universal when they may not be. Henrich, Heine & Norenzayan argued WEIRD participants may be outliers on many psychological dimensions — even basic processes like perception, reasoning, and fairness judgements vary cross-culturally. Relying on WEIRD samples ignores human variation and produces a narrow, potentially misleading picture of human cognition.

Why might perception be theoretically unaffected by culture, and why is evidence of cultural effects surprising?

Perception involves low-level cognitive processes — the early stages of visual processing are thought to be hard-wired by genetics and shared across all humans (the brain and its architecture have a genetic basis common to the species). If perception is bottom-up and automatic, there should be no room for cultural or environmental learning to alter it. Evidence of cultural effects is therefore surprising because it suggests that even processes once thought to be universal and pre-cognitive can be shaped by the environment in which a person develops.

Explain the carpentered corners hypothesis and the Müller-Lyer illusion. What is the relationship with industrialisation?

The Müller-Lyer illusion: two equal lines with inward vs. outward-facing arrow heads appear to differ in length. The carpentered corners hypothesis (Segall et al.) proposes that people raised in built environments with many right-angle corners learn to interpret converging lines as depth cues (corners receding or projecting). This makes them more susceptible to the illusion. People from less industrialised, less 'carpentered' environments are significantly less susceptible. The relationship: greater industrialisation → greater susceptibility to the Müller-Lyer illusion, demonstrating that even visual perception is shaped by environmental experience.

How does environment affect susceptibility to the horizontal-vertical illusion?

The horizontal-vertical illusion: a vertical line appears longer than an equal horizontal line. Susceptibility varies with environment: people who live in open, expansive environments (e.g. open plains, savannah) — where vertical extent in the visual field corresponds to greater distance — tend to be more susceptible to overestimating vertical lines. People in enclosed, forested, or built environments with limited vistas are less susceptible. This parallels the Müller-Lyer findings: the visual environment people grow up in calibrates their perceptual system in ways that produce different susceptibilities to illusions.

Describe the ultimatum game and how behaviour differs across WEIRD and non-WEIRD cultures.

A proposer is given a sum of money and offers any portion to a responder; if the responder rejects, both get nothing. In WEIRD cultures, proposers offer ~40–50% and responders reject offers below ~30% — reflecting fairness norms. Nowak et al. found non-WEIRD participants (Africa, Amazonia, Oceania, etc.) made lower offers and rarely rejected. This does not mean they lack fairness — their concept of fairness is shaped differently. Market integration and world religion exposure predicted higher offers; community size predicted punishment of low offers. Cultural values about fairness are shaped by large-scale economic and social systems.

Explain analytic vs. holistic reasoning as a cross-cultural dimension.

Analytic reasoning (more common in Western cultures): detaches an object from its context, focuses on its individual properties, assigns it to a category, and uses rules to predict its behaviour. Holistic reasoning (more common in East Asian cultures): attends to the whole field and the relationships between objects, prefers context-based prediction, and uses experience-based dialectical reasoning. Crucially, all adults have both systems — everyone can learn rules and make associations. Research suggests that cultural and environmental influences shape which strategy is preferred, not which is possible.

Describe Senzaki et al.'s focal fish experiment. When did cultural effects emerge and when did they not?

Japanese and Canadian participants viewed simple visual scenes with a focal object and background, under two conditions. In the observation condition, both groups attended primarily to focal objects — suggesting this is a cognitive universal for simple perception tasks. In the narrative condition (telling a story about the scene, which activates a cultural schema), Canadian participants continued attending to focal objects while Japanese participants shifted attention to the background context. Cultural effects on visual attention emerged only when a cultural framework was invoked, suggesting that cultural patterns of attention are situational rather than automatic or constant.

What did Brown & Levinson find about language and spatial cognition? What did Li & Gleitman add?

Brown & Levinson found Dutch speakers used a relative (egocentric) spatial frame (left/right relative to self) while Tenejapan Mayan speakers used an absolute (allocentric) frame (cardinal directions). Li & Gleitman replicated the Dutch-Mayan difference but tested whether language alone caused it. They found that English speakers used a relative frame inside (blinds down — as Brown & Levinson found for Dutch) but shifted to an absolute frame outdoors or with landmarks visible — matching Mayan behaviour. Conclusion: language is not the sole driver; environmental context also shapes spatial cognition strategy. The relative frame appears to be the English default, overridden by landmark-rich environments.