Operant conditioning focuses on the behaviour the animal/human makes and the consequence of that behaviour.
The consequence is important- it determines whether a behaviour is repeated. We learn through reward and reinforcement (positive, negative and punishment).
Consequence: Positive reinforcement
Involves presenting something the organism likes which strengthens the behaviour.
Consequence: Negative reinforcement
Involves removing something the organism doesn't like which also strengthens the behaviour.
Consequence: Punishment
Involves presenting the organism with something it doesn't like which weakens the behaviour.
Reinforcement (both negative and positive) increase the likelihood of repeated behaviour.
Skinner researched operant conditioning using a rat and 'Skinner's Box'.
Skinner's Box was a cage the rat could be placed in with a small lever, food dispenser and a floor which could be electrified.
Every time the rat pressed the lever, a pellet was dispensed (positive reinforcement), the rats quickly learnt this.
This suggested that positive reinforcement increases the likelihood of repeated behaviour.
In another experiment, the rats were subjected to an electric current as they moved around. When the lever was pressed, it was switched off.
This suggested that negative reinforcement has a similar effect on behavioural repetition to positive reinforcement.