• 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. Animal Testing

    They mention three R's as alternatives. It involves 'Reduction in number of animals applied, Refinement of strategies to minimize pain and distress to the animals, and Replacement of the animal model with a non-animal standard or a species phylo-genetically lower'. (Why Conduct Literature Searches for Alternatives?)

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

    It has been found that participants held different views for different types of animal use, and that belief in animal mind was a powerful and consistent predictor of these attitudes and that this may be due to the increasing interest in animal mind over the past decade (Knight, Vrij, Cherryman, & Nunkoosing, 2004).

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

    But it was also an invention to build hothouses in which plants can grow every time of the year. Or the grow of more productive types of grain and the invention of the "three fields economy" (Dreifelderwirtschaft)

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

    (Figure 1). Post Hoc tests showed that the two real leaf, substrate types were not significantly different in terms of total invertebrate numbers, but they both contained significantly more individuals than the plastic substrate (Table1). ANOVA table Log Total number of Invertebrates SS df F P Leaf Type .606 2

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

    4.3 Unimproved Grassland The unimproved grassland sites at Tunstall Hills generally occur in areas where topography prevented intensive agricultural use. Where possible these areas are managed by mowing to prevent invasive grasses dominating. These areas are extremely diverse relative to the improved grasslands and contain notable species such as Tor-Grass (Brachypodium pinnatum).

  2. Investigating the effect that group size has on the vigilant behaviour of flocks of ...

    group size increases the proportion of the group looking will decrease and more time will be spent by the birds doing other confounding activities. Method We walked along the River Tyne roughly in 10 metre blocks stopping every 10 metres. Each group studied 10 groups of gulls of varying sizes.

  1. Investigating whether body size affects the digestibility of antelopes.

    Their populations have continued to decline due to hunting or habitat loss caused by human activities, or in the case of Tsavo National Park, elephant populations that alter the vegetative landscape (Nowak 1999; Walther 1990). Shipley and Felicetti's study (2002)

  2. A Study of the Fishes Caught by Anglers in Downtown Madison, Wisconsin.

    Additionally, some frequency distributions were analyzed. These included the sizes of perch and bluegill and crappie (Figures 5 - 7), and the CPUE for each site (Figures 8 -11). Most of the analysis presented in the Tables and Figures does not include Lake Wingra because no fishes were caught there.

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