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  • Created by: Anjelala
  • Created on: 21-05-18 11:59
What is Reliability ?
-Experimental effect is consistent and stable. You can replicate the findings.
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What is Validity ?
How true is the causality of the behaviour, does the experi really explain what it claims to explain?
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What is the independent variable ?
Variable that is changed or controlled to test effect on the dependent variable
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What is the dependent variable?
The variable that is being tested and measured.
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What does RV stand for and what is it?
Random variables . RV's are other factors that could effect the outcome.
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What is Confounding Variables?
Factors that could affect the two IV levels differently- causes mistake in conclusion of what had affected DV
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What is Extraneous Variable ?
Factors that affect the DV, creating noise, resulting in unclear measurements.
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In an un-ideal world, what are the 2 options of the cause of the variability ?
1) Variability in DV by the IV 2) Variability in DV caused by systematic or random error.
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What is systematic error ?
Affects the score of one condition differently to the other ( confounding variables)
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What is random error ?
It's spread randomly across the scores of both conditions ( Extraneous)
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What are the two Experimental designs ? How do they differ?
1) Between participants design 2) Within participants design - Differ in the way participants take part in the IV conditions
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When to use Between participants design?
- Situations where participants cant be in both conditions , if its related to age/ gender etc. - Diff participant for each group
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When to use Within participants design ?
- Same participants can participate in both conditions. - Use when its hard to recruit participants
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What is the FIELD experimental design?
Iv is manipulated by the experimenter , in a real life setting like hospitals or schools
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What is the NATURAL experimental design?
-Iv changes occur naturally in a real life setting
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What is categorical data?
Scores from participants are placed in a category - eg race, gender ,educational level
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What is continuous data?
-Quantitive data that can be measured - Participants provide a score that can be any value on a measurement scale in use - eg temperature range
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Reliability is....
Whether we can replicate the results - experimental effect is stable and cosistent
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Validity is...
Whether the experiment explains what it claims to explain - how true is the causality of the behavious
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Confounding variable which causes systematic errors ...
Affects the 2 Iv conditions differently ,
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Extraneous variable which causes random errors ...
are factors that may affect the DV in some way
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Extreneous and confounding variables can be restricted by...
- contorlling or manipulating the variables - randomization - Counterbalance
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Other cards in this set

Card 2

Front

What is Validity ?

Back

How true is the causality of the behaviour, does the experi really explain what it claims to explain?

Card 3

Front

What is the independent variable ?

Back

Preview of the front of card 3

Card 4

Front

What is the dependent variable?

Back

Preview of the front of card 4

Card 5

Front

What does RV stand for and what is it?

Back

Preview of the front of card 5
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