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Briefly outline the working memory model. (4 marks)

The working memory model, developed by Baddeley and Hitch (1974), is an explanation of how short-term memory is organised, taken from criticism of the multi-store model of memory. There are different compone...
AF
Answered by Aiesha F. • Psychology tutor
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Consider the closed curve between 0 <= theta < 2pi given by r(theta) = 6 + alpha sin theta, where alpha is some real constant strictly between 0 and 6. The area in this closed curve is 97pi/2. Calculate the value of alpha.

Student uses the definition of area [A = 1/2 integral r(theta)^2 d theta], and proceeds using standard integration techniques to give a quadratic solvable for alpha. [alpha^2 = 25] Thus, alpha = 5.
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Answered by Graham C. • Maths tutor
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Assess the contribution of social action theories to our understanding of society

Symbolic interactionism forms the basis of social action theories, founded by the sociologist Mead. Mead saw society as built up by interactions between people that take place on the basis of meanings held b...
CS
Answered by Caitlin S. • Sociology tutor
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Outline and evaluate the biological approach in psychology. (8 marks)

The biological approach in psychology assumes that, to be able to fully understand human behaviour, we must look at biological structures and processes in the body, for example our genes and neurotransmitter...
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Answered by Aiesha F. • Psychology tutor
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Name and describe both of Kirchhoff's laws.

The Loop rule, this states that the sum of the potentials in a loop must be equal to 0.The Junction rule, this states that the sum of the current entering the junction must be equal to the sum of the current...
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Answered by Boris B. • Physics tutor
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