Which study design is used to assess the impact of environmental enrichment on brain development in animals?

Which study design is used to assess the impact of environmental enrichment on brain development in animals?

• A. Rosenzweig Environmental Enrichment/Impoverishment Study
• B. Harlow's Monkeys
• C. Bandura's Bobo Doll
• D. Piaget's Animal Tests

Answer: (A)

The idea being tested is how an enriched environment influences brain development in animals, using a controlled experimental setup to compare different living conditions and their effects on neural growth. In the Rosenzweig Environmental Enrichment/Impoverishment study, animals (typically rats) are randomly assigned to either an enriched environment—with complex stimuli, social interaction, and opportunities for exploration—or to an impoverished standard cage. After a set period, researchers examine brain tissue and look for differences such as cortical weight, neuron density, and dendritic branching. The enriched group consistently shows structural brain changes—larger cortical weight, thicker cortex, more dendritic branching, and higher synaptic density—demonstrating that environmental complexity can drive neurodevelopment and plasticity. Other options describe studies focused on different topics: social attachment in monkeys, observational learning in humans, or general cognitive testing in children. They do not specifically address how environmental enrichment affects brain development in animals, so they don’t fit as directly as the Rosenzweig study.

The idea being tested is how an enriched environment influences brain development in animals, using a controlled experimental setup to compare different living conditions and their effects on neural growth.

In the Rosenzweig Environmental Enrichment/Impoverishment study, animals (typically rats) are randomly assigned to either an enriched environment—with complex stimuli, social interaction, and opportunities for exploration—or to an impoverished standard cage. After a set period, researchers examine brain tissue and look for differences such as cortical weight, neuron density, and dendritic branching. The enriched group consistently shows structural brain changes—larger cortical weight, thicker cortex, more dendritic branching, and higher synaptic density—demonstrating that environmental complexity can drive neurodevelopment and plasticity.

Other options describe studies focused on different topics: social attachment in monkeys, observational learning in humans, or general cognitive testing in children. They do not specifically address how environmental enrichment affects brain development in animals, so they don’t fit as directly as the Rosenzweig study.