hypothesis and variables QUIZ

Hypothesis and variables QUIZ %

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A hypothesis is...

► a testable prediction

► something unwanted that can affect results

► what the researcher measures

1/5

right answer

The hypothesis is one of the most important steps of psychological research. Hypothesis refers to an assumption or the temporary statement made by the researcher before the execution of the experiment, regarding the possible outcome of that experiment.

33%

1/5

The dependent variable is...

► what the researcher changes or compares

► what the researcher measures

► something unwanted that can affect results

2/5

RIGHT ANSWER

75%

The dependent variable is the variable that is measured by the experimenter. In the previous example, the scores on the test performance measure would be the dependent variable.

2/5

The independent variable is...

► what the researcher changes or compares

► what the researcher measures

► a testable prediction

3/5

RIGHT ANSWER

The independent variable (IV) is the characteristic of a psychology experiment that is manipulated or changed by researchers, not by other variables in the experiment. For example, in an experiment looking at the effects of studying on test scores, studying would be the independent variable.

67%

3/5

An extraneous variable is...

► what the researcher measures

► what the researcher changes or compares

► something unwanted that can affect results

4/5

right answer

An extraneous variable is anything in a psychology experiment other than the independent and dependent variables. The variables can present challenges and introduce errors, so it is important for experiments to control these extraneous factors.

33%

4/5

Two variables that change with each other - as one changes, so does the other - are called...

► Linked variables

► Co-variables

► Joined variables

5/5

right answer

In the case of psychology, the numbers being analysed relate to behaviours (or variables that could affect behaviour) but actually any two variables producing quantitative data could be checked to establish whether a correlations exists. Each of the two sets of numbers represents a co-variable.

25%

5/5

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