Nima is a chef investigating whether there is a gender difference in dessert orders at her restaurant. She plans to conduct a natural experiment to study this, which has issues with validity that must be addressed. The most appropriate design for her study would be an experimental design, allowing her to control variables and draw causal conclusions. Eyewitness testimony from a child like Jake may be less reliable for convicting someone due to issues with children's memory and suggestibility.

1. Name: _____________________________
Work – Monday 25th February 2013
This is to be completed, in full, by the end of the day please. Put finished sheets in the box on my
desk. Thanks, Lauren
1. Nima is a chef; she and her colleagues are interested in whether there is a gender difference
in the number of desserts ordered by people who come into her restaurant.
Write a fully operationalised directional hypothesis for Nima’s investigation (3 marks)
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2. Nima is going to conduct a natural experiment, discuss issues regarding validity that are
present when using this research method (4 marks)
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3.
(a) Identify the most appropriate experimental design for Nima to use in her experiment (1 mark)
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(b) Explain your choice for 3. (a) (2 marks)
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4. Brain and his 7 year old son Jake witness the robbery of a local shop; both Brain and Jake
are questioned. Explain why the police might be less likely to convict an individual based
on Jake’s EWT alone. (2 marks)
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2. Name: _____________________________
5. An investigation was carried out looking at the relationship between age and the accuracy
of EWT, explain one advantage and one disadvantage of using correlational analysis
(2 marks + 2 marks)
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6. Another way in which EWT can be distorted is through the type of questioning that’s used
during investigation. Explain how researchers have investigated the effects of misleading
information on the accuracy of eyewitness testimony (4 marks)
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7. Complete the table below (3 marks)
Characteristics Short term memory Long term memory
Capacity
Encoding
Duration
8. Identify and explain one disadvantage of the working memory model (2 marks)
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