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practicals in practice

Making choices

Decision-making in action

Neurobiologist Catherine McCrohan explains how a simple A-level practical investigating behavioural choice can underpin studies of brain function including the sense of smell, learning and memory

Figure 1 Simple apparatus for testing the effect of environmental variables on woodlice. A = damp/dark, B = damp/light, C = dry/light, D = dry/dark

Making the right decisions is key to survival. Throughout their lives, animals have to choose — what to eat, which animal to mate with, whether to fight or run away. Decisions depend on the choices on offer and on the animal’s immediate situation and motivation. Finding food may be a priority when you’re hungry, even to the point where you are prepared to face up to a potential predator rather than run away.

Behaviour

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Zika virus: why it caused a global health emergency

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Close-up on the super-model fly

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