The experimental method

If a researcher wants to find out how the weather influences mood, he should carry out the following type experiment:

• Natural

• Field

• Laboratory

The three types of experiment are:

• Opportunity, stratified, systematic

• Matched pairs, independent groups, repeated measures

• Natural, field, laboratory

Which one of the following experimental designs would most likely result in order effects?

• Matched pairs

• Repeated measures

• Independent groups

When participants realise the aim of an experiment and subconsciously change their behaviour to fit the aim, it is called:

• demand characteristics

• order effects

• counterbalancing

What is the name of the prediction that a researcher makes at the start of an experiment?

• Aim

• Hypothesis

• Variable

• Measure

Which is the research design where all participants take part in every condition of the experiment?

• Matched pairs

• Independent groups

• Repeated measures

Which variable does a researcher manipulate/ change?

• The independent variable

• The extraneous variable

• The dependent variable

Which type of sampling involves ensuring that every member of the target population has the same chance of being selected?

• Random

• Stratified

• Opportunity

• Systematic

Which experimental design is being used if a participant only completes one condition of an experiment?

• Matched pairs (or repeated measures)

• Repeated measures (or independent groups)

• Independent groups (or matched pairs)

What problem would occur if every participant completed condition 1 of a experiment first, and then moved on to condition 2?

• demand characteristics

• order effects

• opportunity sampling