Quantitative methods formative practice 5.1a-5.1c

Quantitative data is data in the form of:

• numbers

• words

• explanations

• data

• freddie mercury

select all the types of experiments we will cover in IB Psychology

• true experiment

• natural experiment

• quasi-experiment

• field experiment

• external experiment

explain the difference between a lab experiment and true experiment.

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The Independent variable is:

• Manipulated by the researcher

• Measured by the researcher

why are experiments used to understand human behaviour?

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which is a characteristic of a true experiment?

• participants are randomly allocated to conditions

• participants are randomly chosen from the population

• participants are only in a control group OR experimental group

• participants dont know the purpose of the experiment

which is a characteristic of a true experiment

• the aim is to investigate the cause and effect relationships between variables

• the aim is to investigate a variable in a laboratory setting

• the aim is to investigate how the DV influences the IV

• the aim is to investigate how variable change together

which is a characteristic of a true experiment

• extraneous variables are controlled for as much as possible

• extraneous variables are already controlled for

• extraneous variables help manipulate the Independent variable

• extraneous variable help measure the dependent variable

Experimental design refers to..

• how participants are allocated into treatment and control groups

• how participants are allocated into independent and dependent groups

• how participants are selected to join the experiment

• how participants are assessed in the experiment

When participants experience different conditions of the research design.

• independent samples

• repeated measures

• matched pairs

• true experiment