• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Physiological Approach Research Method - Biological Methods.

Extracts from this document...


Physiological Approach Research Method #1: Biological Methods This research method can also be divided into two smaller groups: Invasive and Non-Invasive Method. Invasive method basically involves the actual cutting and damaging of a brain, while non-invasive method revolves around scanning a fully functional brain with different devices. Invasive Method The invasive method can also be broken down into two smaller groups: lesions and ablations surgery. Ablation surgery is the process of actually removing a part of a brain, whilst lesions surgery involves damaging a part of the brain with electrodes. Most of these methods however, are done on animals, usually because of ethical issues. Surgery is still done on human brains, although they are only used to help the patients more than to experiment on them. Evaluation Advantages: There were quite a few tests that were done on humans, where it's quite safe for us to make a few reasonable conclusions with. Also, when using animals, the researchers can damage a specific part of a brain to see what happens. ...read more.


MRI scan is used as well, for similar purposes. This one involves magnetic fields being measured. All these scans use the aid of computers to plot the images. Evaluation Advantages: The scans are usually very accurate, and show lots of different details. The scans are also useful when the person is in a state of emergency, as they produce the images almost immediately. Also, the results are usually replicable, which makes it hard to depict. Disadvantages: The biggest problem with these scanners is that they are too expensive currently. The scanners are usually used for people who need help, more than research purposes because of this. Research Method #2: Genetic Influences on individual differences This method can also be divided into two smaller sections, but they are both based around the study of twins. Correlational techniques and twin studies Correlational technique is the observation of how different variables have affects on people. ...read more.


There may also be some subjectivity from the researcher. Research Method #2: Experimentations Basically put, this method is when people take an idea, test it, and see if their idea was right. The experiments vary vastly, and the subjects of the experiments vary too. The experimentations can be reproduced by anyone, as they are very structured and well controlled. Evaluation Advantages: Because these experiments and results can be reproduced by anyone, the results are reliable. The strict controls allow the psychologists to see what affects people in different ways. Also, animal testing allows the researcher to do certain tests on animals that maybe deemed as unethical to be done to people. These experiments told us a lot about people too, as we are animals biologically. Disadvantages: However, some people view experiments on animals as unethical as experiments done on people. There are also lots of differences between us and animals, which disallows direct comparison. Also, although controlled may give us reliable results, it may not necessarily be accurate. They are usually things which people won't do in real life, and thus, the experiments lack ecological validity. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our University Degree Zoology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related University Degree Zoology essays

  1. Using the Grounded Theory to explore people's views on animal use: What factors influence ...

    animal rights groups Background knowledge of types of animal use and the treatment of animals Experiences of Animals: Career links; animal related/unrelated jobs, Childhood experiences, Contact with animals Environment; rural/urban living area, Religion, Culture, Vegetarianism Attachment to animals: Companionship, Bonds, Pet ownership, Maternal instincts Belief in animal mind: Intelligence, Personality,

  2. This report was commissioned by Sunderland City Council to assess the ecological and educational ...

    Within the entire UK there is around 40000 ha. of calcareous grassland but within the Northeast region the amount of unimproved calcareous grassland is as little as 336 ha. (Hedley et al. 1997). This habitat is constantly becoming rarer, for instance semi-natural lowland grasslands in England and Wales have declined by 97% in the last 50 years (URL 2).

  1. Invertebrate colonisation of leaf packs of different palatability in an upland river.

    4.571 .019 Week .005 1 .072 .791 Leaf Type*Week .484 2 3.652 .038 Error 1.922 29 Tukey Post-hoc Table P Alder Oak .885 Plastic .007 Oak Plastic .041 ANOVA table Log number of Shredders SS df F P Leaf Type 3.132 2 15.232 <.001 Week .063 1 .615 .439 Leaf

  2. Vegetarianism is a groing trend right now with more and more people choosing it ...

    So why not renounce the goose or the turkey? Argument: But animals eat other animals too! Counterargument: So you want to compare yourself with predacious animals like lions and tigers? "Unfortunately" our ancestors are the anthropoid apes that are mostly plain plant eater what means vegetarians.

  1. Animal Behaviour - Tinbergens Four Whys, Where are we now?

    The act of complex behaviour cannot be simply controlled by a single part of the central nervous system. 2. Survival Value "What is the adaptive significance of the behaviour?", "Why did it happen?" In the post Darwinian era a reaction against uncritical analysis of selection theory was initiated.

  2. Why are primate's brains large?

    It accounts for approximately 13% of the total brain's volume in primates. This is a lot less in non-primates. Cerebellum - This part of the brain controls balance, posture and coordinates muscle movement. Corpus Callosum - This acts as a connection between the left and right cerebral hemispheres.

  1. Animal Experiments

    Examples or efficiency testing are: 1. Antiperspirant is tested on mouse footpads because it is the only region where they have sweat glands.

  2. Animal Testing

    It is assumed that a scientist's goal is to devise methods to minimize pain to every extent possible but for now we have to sacrifice on animals to achieve this result. Activists against this practice portray scientists to be a society of crazy, cruel, curiosity seekers.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work