Research methods

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  • Created by: EliseCeri
  • Created on: 10-11-15 09:12
What is the Experimental method?
The experimental method involved the manipulation of the IV to effect the DV
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What types of Experiments can you have?
Lab, field, natural and Qausi
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What is a lab experiment?
The experiment is done in a controlled setting where the researcher manipulates the IV to effect the DV
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What is a Field experiment?
The experiment is done is a natural setting where the researcher manipulates the IV to effect the DV
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What is a Natural experiemt?
The IV changed naturally, and would happen anyway if the researcher was not present
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What is a Qausi experiment?
The variables already exist and are not manipulated by the researcher.
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What is a directional hypothesis
It states the direction of the difference or relationship
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What is a non-directional hypothesis
it does not state the direction
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What is the IV?
The IV is the presumed cause of the DV and is manipulated by the researcher
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What is the DV?
The DV is the result of the IV and is observed/measured by the researcher.
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What is an extraneous variable?
A variable that is not the IV that can pose a threat to the validity of the experiment. they are easy to control and can be seperated from the IV
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What is a confounding variable?
A variable that is not the IV that can undermine the validity of the experiment and is difficult to detect.
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What are demand characteristics?
Aspects of the situation that demand certain characterists. Guessing the aims, please-you effect
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What is the researcher effect?
it is when the researcher accidentally influences the effect of the IV on DV
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What are the experimental designs?
Indipendant groups, repeated measures, matched pairs
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What is the independant groups design?
The are two seperate groups that experience two seperate conditions
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What is the problem with the independant groups design?
Group differences: everyone is different
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How do you control group differences?
Random allocation
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What is the repeated measures design?
The participants take part in all conditions
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What is the problem with the repeated measures design?
Order effects- fatigue/ learning effect
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how can you control the threat of repeated measures desgin?
Counterbalancing
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What is the matched pairs design?
Pairs of participants are matched on some variables that may effect the Dv. One is assigned to A and one B
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Why do we operationalise variables?
It makes the test measurable and repeatable.
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What are the different types of sampling?
Random, statified, systematic, opportunity, volunteer
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What is random sampling?
You randomly select participant using a lottery technique
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What is statified sampling?
You identify the proportions of difffernt group of the target population and then randomly select people to fulfill the same proportion
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What is systematic sampling?
Every nth person
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what is oppertunity sampling?
you approach them
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What is volunteer sampling?
They approach you.
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What types of Experiments can you have?

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Lab, field, natural and Qausi

Card 3

Front

What is a lab experiment?

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Card 4

Front

What is a Field experiment?

Back

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Card 5

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What is a Natural experiemt?

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