Operant learning is a process by which a specific behavioural response (such as a lever press) is associated with a biologically salient stimulus known as a reinforcer (such as food). The dorsomedial ...

Operant conditioning uses rewards and punishments to change behaviors. Positive reinforcement and negative reinforcement increase the chance of a behavior happening again. Operant conditioning can ...

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A breakthrough deal to attempt to limit global temperature rises was agreed at a conference of world nations in December 2015. These charts from the time show how and why the Earth’s climate is ...