GCSE AQA Psychology Research Methods Revision

A researcher conducts a study to see if children using a new reading scheme progress more than a control group using the existing scheme. Which of the following might be an Extraneous Variable (EV)?

• The children's names

• The children's current reading ability

• The number of children in the study

• The scheme the children are assigned to

The purpose of a sample is to:

• Draw conclusions about the sample

• Study lots of people

• Generalise results to the population

• Reduce bias

Participant variables are a problem in which design?

(a)  

• Independent groups
• Matched pairs

• Repeated measures

• Controlled design

'Sugar consumption has no impact on hyperactivity' is an example of a ??? hypothesis

(a)  

Which of the following best describes longitudinal?

• using different methods

• a snapshot

• replicable

• takes place overtime

Open questions

• are easily analysed

• have a fixed range of answers

• produce qualitative data

• are used only in interviews

• produce quantitative data

An alternative hypothesis in an experiment states:

• The IV will have an effect on the DV

• That there is no relationship between the DV and the IV

• The DV will have an effect on the IV

• That there is a correlation between the IV and the DV

The purpose of an experiment is to:

• Test Extraneous Variables (EV)

• Measure an Independent Variable (IV)

• Demonstrate a cause and effect relationship

• Change a Dependent Variable (DV)

What is an Independent Variable (IV)?

The best type of study to reduce Extraneous Variables (EVs) is a:

• Laboratory Experiment

• Field Experiment

• Naturalistic Experiment

• Quasi Experiment