Psychology Key Terms

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Independent variable
The variable manipulated by the researcher
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Dependant variable
The variable that change is measured in
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Repeated measures
Each participant does all the conditions in the experiment
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Independent measures
Each participant does one condition in the experiment
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Ecological Validity
The ability of the experiment to represent real world situations
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Research Design
How you conduct the experiment
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Demand characteristics
When the participant realises the aim of the experiment and begins to act accordingly
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Extraneous variable
Variables that alter the experiment
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Confounding variable
Variables that alter the result of the experiment
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Reductionist
Simplifying a complex idea to its most basic level of explanation
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Ethical Research
Leaving participants in the same condition you found them in
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Triangulation
Using more than one type of experiment to draw your conclusion
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Hypothesis
A testable statement that you believe to be true based on deductive/inductive reasoning
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Alternative hypothesis
A prediction that there'll be a difference in behaviour
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Null hypothesis
A prediction that there'll be a difference in behaviour
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Directional/One tailed hypothesis
Includes 'more or less', 'stronger or weaker', 'positive and negative'
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Non Directional/Two tailed hypothesis
Gives no direction and simply states that there'll be a correlation/relationship
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Correlation hypothesis
A hypothesis stating a relationship between two variables
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Opportunity sample
A sample of participant produced by selecting people who are most easily available at the time of the study
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Random sample
A sample of participants produced by using a random technique such that every member of the target population has equal chance of being selected
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Self selected sample
A sample of participants produced by asking for volunteers
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Snowball sample
Relies on referrals from initial participants to generate additional participants
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Other cards in this set

Card 2

Front

Dependant variable

Back

The variable that change is measured in

Card 3

Front

Repeated measures

Back

Preview of the front of card 3

Card 4

Front

Independent measures

Back

Preview of the front of card 4

Card 5

Front

Ecological Validity

Back

Preview of the front of card 5
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