Psychology Theme B

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What is external reliability?
If your results match those of other people doing the same experiment. Being able to replicate the results of a study
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What is internal reliability?
Consistancy of a measure within a test, usually assessed with a split half method.
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What is reliability?
Refers to the consistancy of a measure. A measure is reliable if you get the same results repeatedly
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What is inter rater/ observer reliability?
Observer will redo you observation/questionaire or do it at the same time to check for consistancy in the results (use for observation)
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What is the split half method?
Split the number of questions you have in half then conduct a correlation on each the first and the second half. (use for self report method)
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What is the test re test method?
Give ppts a test and after a set interval of time ppts redo the test.
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What is replication?
Redoing the whole experiment again
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What is content analysis and when is it used?
Used as a way of displaying qualitative data into quantitative data
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What is validity?
Whether or not your experiment is measuring what it's meant to measure
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How do you assess and improve experimental (internal validity)?
pilot study or peer review, Random sampling, reduce demand characteristics, controlling confounding variables
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How do you assess and improve experimental (external validity)?
Replicate the experiment, Random sampling, natural setting, replicate over time
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How do you assess and improve observation (internal validity)?
Correlate observation, Improve training, double blind test, standardised instructions
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How do you assess and improve a questionaire/ interview's validity?
revise test construction, revise test items
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How do you assess and improve face validity?
Does it look right? Review test contruction, revise test items
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How do you assess and improve content validity?
Ask individual experts, revise test construction, revise test items
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How do you assess and improve concurrent validity?
Correlate with results of an established test, revise test construction, revise test items
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How do you assess and improve contruct validity?
Test a range of predictions from the tests, revise test construction, revise test items
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What is face validity?
Do the questions appear to be linked to the topic? Don't go into detail here
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What is content validity?
Are the questions you are asking 100% linked to the topic you are investigating? Do they contain the correct content?
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What is concurrent validity?
Do the results/theories you propose match the results of theories of previous research?
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What is predictive validity?
Do the results you have achieved correlate with a future measure of behaviour
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What is Construct validity?
The degree to which the defenition of the IV and the DV correspond to theoretical concepts which their meant to be tapping into
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What is the target population?
The people you want your sample and findings to represent
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What is random sampling?
Everyone in the target population has an equal chance of being picked. Draw names out of a hat or from a computer system to select ppts
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What is volunteer sampling?
ppts put themselves forward to take part in a study
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What is an oppertunity sample?
Ask anyone who is available to you to participate in your study
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List all 6 ethical issues
Protection from harm, informed consent, debriefing, right to withdraw, confidentiality, deception
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What is presumtive consent?
Asking people of a similar background to your target sample. If they give their permission, you can assume that your target popluation would also.
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What is prior general consent?
Telling ppts that they will be deceived before they take part but not telling them how
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What is retrospective consent?
Gain fully informed consent after the experiment
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What must be included in a consent form?
1)the aim and title of the study, 2) Any ethical issues, 3)outline procedure, 4) any benefits or gains ppts or psychology will receive.
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What must be included in a debriefing form?
information from consent form, state the purpose of expt, state the actual purpose if deception was involved, why deception was involved, contact details, successful study? Any aftercare contact details
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What must be included in standardised instructions?
Must be strict using measurement, be very detailed in what is used in the experiment
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Other cards in this set

Card 2

Front

What is internal reliability?

Back

Consistancy of a measure within a test, usually assessed with a split half method.

Card 3

Front

What is reliability?

Back

Preview of the front of card 3

Card 4

Front

What is inter rater/ observer reliability?

Back

Preview of the front of card 4

Card 5

Front

What is the split half method?

Back

Preview of the front of card 5
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