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- 11) Miller (1956)- Magical No. 7 +/- 2 (a) Absolute Identification Task 1- shown letters of different sizes say which one was shown. Findings: 2 or 3 variations, easy to make absolute judgements, no. increases, probability of making error increass(a) Absolute Identification Task 2- hear set of 9 tones, vary frequency, have to identify which one.
Findings: highest and lowest freq. tones identified quite well (65%) closer to middle= worse. 8-9 items, unable to perform without errors - 2(b) Subsitising- count how many objects after quick presentation Findings: 7- can handle, as no. increases, so does task difficulty(c) Memory Span: Repeat back sequence of digits in correct order
ALL SUGGEST LIMIT ON MEMORY CAPACITY
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