Key term
AQA A-Level Psychology 7182
Social Influence
Memory
Attachment
Topic overviewCaregiver-infant interactions: reciprocity and interactional synchronySchaffer's stages of attachmentMultiple attachments and the role of the fatherAnimal studies of attachmentExplanations of attachmentAinsworth's Strange Situation and types of attachmentBowlby's theory of maternal deprivation and effects of institutionalisationInfluence of early attachment on relationshipsCultural variations in attachment
Approaches in Psychology
Biopsychology
Topic overviewDivisions of the nervous systemStructure and function of neurons and synaptic transmissionThe endocrine systemThe fight or flight responseWays of studying the brainLocalisation of function and hemispheric lateralisationPlasticity and functional recovery of the brain after traumaBiological rhythms: circadian, infradian and ultradian
Clinical Psychology and Mental Health
Research Methods
Scientific Processes
Topic overviewAims and hypothesesSamplingPilot studiesExperimental designsObservational designQuestionnaire construction and design of interviewsVariablesControlDemand characteristics and investigator effectsEthicsPeer reviewImplications of psychological research for the economyReliabilityValidityFeatures of scienceReporting psychological investigations
Quantitative and Qualitative Data
Topic overviewQuantitative and qualitative data; the distinction between qualitative and quantitative data collection techniquesPrimary and secondary data, including meta-analysisDescriptive statistics: measures of central tendency and measures of dispersionPresentation and display of quantitative data: graphs, tables, scattergrams, bar chartsDistributions: normal and skewed distributionsIntroduction to statistical testing; the sign test
Data Handling and Analysis
Inferential Testing
Issues and Debates in Psychology
RelationshipsOption 1
GenderOption 1
Cognition and DevelopmentOption 1
SchizophreniaOption 2
Eating BehaviourOption 2
StressOption 2
AggressionOption 3
Forensic PsychologyOption 3
AddictionOption 3
Explanations for Nicotine AddictionOption 3
Quantitative and Qualitative Data
Distributions: normal and skewed distributions
- 4 things to know
- Paper 2
Overview
The shape of a normal distribution and the proportion of scores within each standard deviation, positive and negative skew, and which tests assume normality.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Numbers
What proportion of scores lies within one, two and three standard deviations?
Key term
Describe a positively skewed distribution.
Key term
Which tests assume a normal distribution, and which do not?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is a normal distribution?
Model answer
A symmetrical, bell-shaped frequency distribution where data clusters around a central mean value.
- 2
Describe the shape of a normal distribution curve.
Model answer
It is symmetrical and bell-shaped, with data clustering around the centre.
- 3
In a normal distribution, what is the relationship between the mean, median, and mode?
Model answer
They are all equal and located at the centre of the distribution.
- 4
Where are the mean, median, and mode positioned in a perfectly normal distribution?
Model answer
All three are at the same central point of the distribution.
- 5
What percentage of data falls within one standard deviation of the mean in a normal distribution?
Model answer
Approximately 68%.
- 6
In a normal distribution, approximately what proportion of scores lie within two standard deviations of the mean?
Model answer
Approximately 95%.
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