gcse psychology the gestalt theory of illusions. learning objectives to learn abut the gestalt...
TRANSCRIPT
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GCSE PsychologyThe Gestalt theory of illusions
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Learning objectives
• To learn abut the Gestalt theory of illusions• To identify the strengths and weaknesses of this theory• To learn about Gregory’s perspective theory of illusions• To learn how to evaluate Gregory’s theory.
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Illusions recap
Ponzo illusion Muller Lyer illusion Hering illusions
What type of illusions are these?
DISTORTIONS
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What about these?
FICTIONS
Kanizsa Triangle
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And these?
Rubin’s Vase Leeepers Lady
AMBIGUOUS FIGURES
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Gestalt theory of illusions
• Gestalt theory could explain these illusions by....
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Ponzo illusion Muller Lyer illusion Hering illusions
DISTORTIONSWhen we perceive the figure as a whole, pints / fins as well, we tend to ‘add’ the fins to the straight line perceiving it as a whole rather than its separate parts. So we are stretching the line out.
Can only explain the distortion Muller-Lyer!!
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What about these?
FICTIONS
Kanizsa Triangle
Kanizas triangle – according to the law of closure, we should make out a whole even though there are parts missing....we should make out a 6 pointed star but we don’t – we see 2 triangles.
Explains fictions well ~ closure law but for some there is a problem...
Seems to use different explanations at different times
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AMBIGUOUS FIGURES
Perception has to be organised differently to see the different images due to the whole being made up of the same parts meaning they can not be seen at the same time
Tells us about ambiguous figs well ~ using figure-ground law
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Task...
• Consider the strengths and weaknesses of Gestalt theory.
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Gestalt theory of illusions
• You should now produce a booklet or poster to explain the Gestalt theory of illusions. • Use the internet to help you also but stick to the following points:• Explaining fictions, which do we recognise first?, • explaining distortions • explaining ambiguous