What biological techniques are used to study development?
EEG and MRI
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What behavioural techniques?
Preference method and habituation
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What does EEG do?
Measures time sensitive changes in brain activity
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What is an ERP?
Measures of how brain activity changes in response to an event
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What did Haan and Nelson find?
Through EEG scans, ERP responses suggested infants recognised mothers face
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Limitations of EEG?
Takes patience to put on cap, time consuming, infants have to be still for 15 mins, testing conditions do not represent real world environment
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What are the 2 types of MRI?
Structural and functional
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What is functional MRI?
images of the areas of activity in the brain
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What is structural MRI?
Slices of the brain
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explain the preference method
A baby is presented with 2 stimuli, time looked at each measured, if it looks at one more than the other then this shows discrimination and preference towards it
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What did Johnson find?
Using the preference he found that infants prefer the look of a normal face to a scrambled face
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