Year 10 Psychology - Variables (3)

What are the categories of variables in all psychological research?

• x and y

• Independent, Dependent and Control

• Extraneous and Confounding variables

• Independent, Dependent, Control, Extraneous and Confounding variables

The Independent Variable (IV) is:

• The variable that is observed and measured (Effect of the change)

• The variable that is manipulated or changed by the experimenter (Cause of the change)

• The variable that is observed and measured (Cause of the change)

• The variable that is manipulated or changed by the experimenter (Effect of the change)

The Dependent Variable (DV) is?

• The variable that is observed and measured (Effect of the change)

• The variable that is manipulated or changed by the experimenter (Cause of the change)

• The variable that is observed and measured (Cause of the change)

• The variable that is manipulated or changed by the experimenter (Effect of the change)

If your research is studying 'the affects of the amount of sunlight on plant growth' and you make sure that all of the plants are water with the same amount of water at the same time of day, what variable are you looking to manage

• Independent

• Dependent

• Control

• None, as the plants would die without water so there would be no experiment

If you are research question is 'Does Alcohol affect driving ability?', what is the independent variable?

• Amount of alcohol consumed

• Driving ability without alcohol consumed

• Driving ability with alcohol consumed

• Affects of alcohol on reflexes

If your research question is 'Does the number of time practicing basketball increase the number of time your shoot a goal', what is the dependent variable?

• Number of hour practicing basketball

• Number of goals you shoot in a game

• Number of goals you shoot whilst practicing

• Number of hours on the basketball court during a game

A variable other than the independent variable that could cause changes in the value of the dependent variable is called what?

• Annoyance

• Extraneous

• Confounding

• Control

A variable other than the independent variable that has a systematic effect of the value of the dependent variable, is called what?

• Annoyance

• Extraneous

• Confounding

• Control

If your research question is 'Does the amount of sleep affect motivation to learn' and you realize that 2 participants have sleep disorders, what kind of variable would the sleep disorder be?

• Annoyance

• Extraneous

• Cofounding

• control

If your research question is 'how does caffeine affect alertness' and you realise that participant group A were tested for alertness in the morning and participant group B were tested for alertness in the afternoon, what variable is the time of day?

• Annoyance

• Extraneous

• Confounding

• Control