Motivation and choice in crime: classical thought: early influences. Some component of us where we think about consequences. How can we punish so people will think about it. Punishment has to fit the crime: deterrence theory. Three dimensions of punishment: (severity, certainty and swiftness: debates about deterrence. 12-17 years of age are most likely to act before they think: other debates: problems of certainty. Look at when you have no punishment system vs. when you do. People feel more safe: other debates: problems of severity. Took teenagers and put them in a max. security facility and has the ppl come in and shows them what will happen if they misbehave. Not hard criminals that this was being done too. Idea where kids are being talked to so they will change Assumes that there is economic choices behind peoples behaviour. Avoid costs of crime: rational choice and crime.