A2 Psych: Research Methods key info

A summary/ bullet points of some of the key information that it needed for the research methods section in PSYA4

Hope it's useful(:

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  • Created by: Sonia
  • Created on: 15-06-12 21:32
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First 172 words of the document:

Mann Whitney U
Independent groups
At least ordinal data
Repeated measures
At least ordinal data
Chi- squared
Independent groups
Nominal data
Sign Test
Repeated measures
Nominal data
Spearman's Rank
At least ordinal data
P=<0.05 means: the significance level whereby the probability of the results being due to chance is
equal to or less than 5%.
Type one error: stating results are significant when they were the result of chance and your finding is
unreliable (unlikely to be found again) [likely with 20% signif]
Type two error: stating results are not significant so any difference found was the result of chance
when actually the results were meaningful and reliable [likely with 1% signif]
Is psychology a science?
Scientific method
Hypothesis testing
Desire for truth
Empirical methods

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Not a science:
No law/ principles
Shared paradigm
Empirical control
Scientific process:
1. Hypothetical statement to be tested based on the aims of the experiment
2. Appropriate methods are chosen allowing us to conduct a valid test on the hypothesis
3. If results don't support the hypothesis the process begins again, devising a new hypothesis
to test
4.…read more

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How to design investigations (include)
Aim, experimental hypothesis, null hypothesis
Method and Design (advantages and disadvantages)
Variables ­ including extraneous ­ how to control these
Materials and data (stats test)
Ethical issues
Practical application
1. Abstract
2. Introduction
3. Methods
4. Results
5. Discussion
Validity: Refers to how well a test/ piece of research measures what it says it measures
Reliability: Refers to consistency over time. If a test, questionnaire etc..…read more

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Participants aren't
randomly allocated=
reduce validity
Correlational Useful for things Causality cannot be
difficult to study e.…read more

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Matched Pairs [pairs of Individual differences are taken More participants are needed
participants are closely into account
matched and are then No order effects will occur
randomly allocated to one
of the experimental
Sample Definition Strengths Weaknesses
Volunteer Where the sample This is good as it means Individual differences-
is attained through there is no researcher you may acquire the
advertising and bias as the researcher same type of person-
individuals actively will have no idea who someone who is
choose and contact will…read more



Excellent resource, explains everything nicely :)

komal maqsood

Amazing piece of work, although some bits are missing. Very well put into short form.

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