Biological approach, GAS and chemotherapy for WJEC PSY1

I teach A level psychology and these are notes made for my students. They cover everything need to know in detail including strengths, weaknesses, methodology and theory. Also has some practice questions. Hope it helps! Everything you need to know to achieve an A*

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  • Created by: Rachel
  • Created on: 20-12-12 15:16

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Biological approach
Biology is defined as the study of life (from the Greek bios meaning `life' and logos meaning
`study'). A biological perspective is relevant to the study of Psychology in three ways:
1. Comparative method: different species of animal can be studied and compared.
This can help in the…

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example, that compared to women,men are more interested in casual sex, prefer a younger
partner and get more jealous over sexual infidelity on the part of the woman. By contrast,
women prefer older partners, are less upset by sexual infidelity but more upset by a man
becoming emotionally involved with…

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1. The central nervous system, especially the brain, plays an essential role in thought
and behaviour. To explain human thought and behaviour, it is necessary to
understand the functions and structure of the brain and the nervous system more
2. Chemical processes in the brain are responsible for…

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Each of these lobes has specific parts which are specialised for different functions, as
identified above. Each of these lobes of the cortex can be divided into two areas, as follows:
1 Primary areas. These process incoming sensory information from our different
senses. The occipital or visual cortex receives information…

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Sensory cortex: This receives sensory information from the nerve endings in
different parts of the body.
Prefrontal cortex: This receives information from all the senses and different parts
of the body. It is involved in the highest mental functions and complex, planned
Both the motor cortex and the sensory…

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There are a number of different kinds of cells in the body, but the one Psychologists are
most interested in is the nerve cell or, as it is more often called, the neuron. The human
brain is made up of around 10,000,000,000 neurons. The total collection of nerve cells in…

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Neurotransmitters: Substances which transmit signals between neurons. There are over 40
different kinds and their functions are not completely known. Some of them have been
found to have effects on behaviour.
Serotonin: Influences mood and food intake. Research shows that it plays a part in
depression and also anorexia.


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another, more distant location. These chemical messengers take longer to transmit their
information than the nervous system, but their effects are usually longer lasting.

The endocrine system - hormones
The endocrine system is composed of many glands which secrete hormones into the blood
system. A hormone is a chemical that…

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3. Behaviour comes from our genes

The gene
If a cell in examined under a microscope, one particular structure can be seen that is central
to all cells: the nucleus. The nucleus of every cell in the human body (other than sperm or
egg cells) contains 46 thread-shaped structures called…

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offspring, if it is disadvantageous it will not survive to pass the characteristic on. Selective
pressure refers to any property of environment which tends to favour one form of species
over another. What does all this have to do with Psychology? The genes we have today,
that, through interactions with…


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