Critically evaluate the researcher's conclusion. Based on your understanding of factors that can influence test performance, provide a more plausible explanation for the difference in scores between the two groups.

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Human social structures present a significant challenge in determining the origins of intelligence, as they can confound the results of assessments. Factors such as ethnicity and socioeconomic status are particularly influential. For instance, disparities in IQ test scores among different ethnic groups are more likely a reflection of social and environmental variables than of inherent intellectual differences. Similarly, children living in poverty experience chronic stress from concerns over basic needs like safety, shelter, and food. This sustained stress can negatively impact brain function and development, resulting in lower IQ scores.

Confounding Influence of Social Structures on Intelligence Assessment

Interpreting Intelligence Test Data

Research demonstrates that children living in poverty exhibit reduced prefrontal brain functioning. This functional impairment is comparable to the cognitive deficits observed in children who have sustained physical damage to the lateral prefrontal cortex. The pervasive, daily stress associated with poverty—such as chronic worry about basic necessities like safety, shelter, and food—is believed to negatively affect brain development and function, contributing to lower IQ scores.

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