Drugs and Addiction.

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Presentation transcript:

Drugs and Addiction

Specification – Page 48 Definition of the application a) Define health psychology, showing understanding that health psychology is about understanding health from study of the biological bases of behaviour (such as the study of drugs and their effects) and the cognitive and social bases for behaviour and that health psychology is about promoting good health.

By the end of today’s lesson you will be able to… Describe, with reference to heroin and one other drug from alcohol, cocaine, ecstasy, marijuana, smoking/nicotine: i mode of action (eg at the synapse) ii effects

Drugs are… A drug is any chemical you take that affects the way your body works. A drug must be able to pass from your body into your brain. Drugs can change the messages your brain cells are sending to each other - by interfering with your brain's own chemical signals.

What were the 3 major drug types we looked at previously?

Hallucinogens Stimulants Sedatives Recap

Hallucinogens These drugs change a person’s perception of the world. Distort what is heard or seen. Lead a person to experience things that do not really exist.

Sedatives These substances have the common property of down-regulating mental activity. Produce a state of relaxation or sleepiness. They can slow reaction time and impair co-ordination. Higher doses produce intoxication and sometimes unconsciousness.

Stimulants These drugs up-regulate mental activity. Cause alertness, feelings of enhanced energy, and excitement. These drugs can also produce agitation and anxiety. Long-term use of stimulants can produce symptoms that closely resemble paranoid psychosis, i.e. thought disorder and hallucinations.

HW: Exam question due next lesson May 2010 (Adapted) 1 (a) Describe the mode of action (how it affects brain functioning) of three drugs you have studied. Make it clear which drugs you are referring to. (9)

We will spend the rest of the lesson in the LRC Go to the blog and click open on the Mouse Party worksheet. It is hyperlinked to the Website There are lots of fun activities for you to explore. The HW exam question is at the bottom of the worksheet. Be ready to report back on your findings next lesson