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A* AQA Psychology: Advanced Stats & Features of Science (Year 2)

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Stop guessing which statistical test to use. These A* flashcards are specifically designed to tackle the high-level Year 2 Research Methods content that often appears in the most challenging sections of Paper 2 and Paper 3. If you struggle with the difference between Type I and Type II errors, or if the Features of Science feel too abstract, these cards break them down into "mark-ready" definitions and applications. Use the same logic and examples I used to secure my A*. What’s Covered in this Advanced Set: • Inferential Statistics: A foolproof guide to choosing the right test (Spearman’s Rho, Pearson’s r, Wilcoxon, Mann-Whitney, Related t-test, Unrelated t-test, and Chi-Squared). • Probability & Significance: Clear explanations of p leq 0.05, critical values, and one-tailed vs. two-tailed tests. • The Features of Science: Master the "big" concepts—Paradigms, Falsifiability, Replicability, Objectivity, and the Empirical Method. • Reliability & Validity: Advanced methods for assessing and improving research (Test-retest, Inter-observer, Concurrent validity, and Face validity). • Content & Thematic Analysis: Step-by-step guides on how to turn qualitative data into quantitative results. Why These Cards are Different: • Mathematical Clarity: Simplifies the logic behind the "Sign Test" and statistical tables so you can pick up the "easy" math marks. • Synoptic Ready: Designed to help you apply Research Methods to any topic in the exam (Biopsychology, Social Influence, etc.). • 2026 Specification Aligned: Tailored strictly to the latest AQA 7182 requirements.

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Institution
AQA
Course
Research Methods

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Correlational study


a research project designed to discover the degree to which two variables are
related to each other


Co-variables


The variables investigated within a correlation e.g. height a weight.


Null Hypothesis (H0)


A statement of "no difference."


What two hypotheses do you always make...


Alternate
Null


Alternate Hypothesis (Ha)


there IS a relationship among variables


What must you always remember on a graph


-both axis label
-title
-data plotted correctly




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:

, Correlational study +/-


+good starting point for research
-doesn't mean cause and effect


Normal distribution


a bell-shaped curve, describing the spread of a characteristic throughout a
population




Characteristics of a normal distribution


Its bell shaped
Its symmetrical
The mean, median, mode are all in the centre
The 2 tails never touch the horizontal axis


Measure of central tendency


Indicates the central or average value in a set of scores.




https://quizlet.com/gb/625154572/flash-cards/?funnelUUID=97372aca-f23d-42cb-b979-bd186a3e3b8f 03/03/2026, 8 49 pm
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:

, Negative skew


mean, median, mode




Positive skew


mode, median, mean




4 markers in research methods...


do bulleted, distinct steps
has a prescriptive mark scheme


A negative skew suggests something is...


too easy, people are getting average too high results


Descriptive statistic


describes certain characteristics or properties of a batch of numbers




https://quizlet.com/gb/625154572/flash-cards/?funnelUUID=97372aca-f23d-42cb-b979-bd186a3e3b8f 03/03/2026, 8 49 pm
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A/AS Level
Examinator
AQA
Subject
Psychology
Unit
Research Methods

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Uploaded on
March 3, 2026
Number of pages
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Written in
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  • aqa a level
  • psychology
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