Experiments !

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  • Created by: harrietrr
  • Created on: 19-04-16 12:33

Difference between aims of a study/hypothesis

Aims of a study highlight what the researcher intends to investigate, whereas aims of a hypothesis highlights what the researchers predict will be the outcome.

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Identify the key features of an experiment

Researchers manipulating the independant variable

Experimental and control conditions

Establishing cause and effect relationships

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Explain what is meant by operationalisation

Ensuring that variables are in a form that can easily be tested. For example, a concept such as 'educational attainment' needs to be specified more clearly in order to investigate it. For example, it could be operationalised to 'gcse maths' 

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Explain why standardisation is important in resear

A set of procedures that are the same for all participants are important because they strengthen the validity of research and enable the researchers to repeat the study,

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Give a confounding variable in an experiment

For example, Raine et al's research was carefully designed, involving a large sample and matched controls. However, Raine et al only compared the six schizophrenics to a further six schizophrenics, meaning the other controls used for comparision did not have any history of psychiatric illness. 

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Why is it important to control extraneous variable

It is important to control extraneous variables in a study as they could  effect the dependant variable in a systematic way that can alter the results of the study if not considered. 

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Distinguish between extraneous and confounding var

Extraneous variables are factors, such as iq, that could  effect the results of a study. Confounding variables, such as psychiatric history, are factors that would  effect the study and the outcomes produced. 

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What is a quasi experiment?

Not a 'true' experiment because the researcher can not manipulate the IV.

Features include participants 'naturally' selected. 

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What is content analysis?

A type of observartional study inwhich behaviour is inderectly observed in written/obsereved artifacts. E.g a diary. 

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What is participant observation?

Where the observer is part of a group being observed. The observer may be a 'participant' unknowist to the people being observed.

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What is participant observation?

Where the observer is part of a group being observed. The observer may be a 'participant' unknowist to the people being observed.

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What is non-participant observation ?

Where an observer is simply watching/listening to the behaviour of others from a distance, and does not interact with the participants. 

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