KSS Quiz

What are the types of variables that must be identified in a controlled experiment in Psychology?

• Independent, interactive, and confounding variables

• Independent, dependent, and controlled variables

• Controlled, correlational, and causal variables

• Dependent, extraneous, and independent variables

What is an Independent Variable (IV) in an experiment?

• The variable that the researcher measures.

• The variable that remains constant throughout the experiment.

• The variable for which quantities are manipulated by the researcher.

• The variable that changes due to the effect of the Controlled Variables.

In a study to observe the impact of different study durations on exam scores, what is an Independent Variable (IV)?

• exam scores

• type of study technique (cue cards, revision posters, testing friends etc...)

• amount of hours studying

• the subject

What does the Dependent Variable (DV) represent in an experiment?

• The variable that is manipulated by the researcher.

• The variable the researcher measures for changes due to the effect of the IV.

• The variable that is kept constant to ensure a fair test.

• The variable that has a direct effect on the IV.

In a study examining the effects of sunlight on plant growth, what does the Dependent Variable (DV) represent?

• The amount of sunlight each plant is exposed to.

• The growth of the plants measured in height due to the varying levels of sunlight exposure.

• The type of soil used for all plants to ensure a fair test.

• The type of plant used in the experiment.

What are Controlled Variables in an experiment?

• Variables that change in response to the IV.

• Variables that the researcher measures.

• Variables that are manipulated by the researcher.

• Variables other than the IV that a researcher holds constant in an investigation.

In a study examining the effects of caffeine on concentration, what would be an example of a controlled variable?

• levels of concentration

• caffeine

• types of caffeinated drinks consumed (coffee, tea, energy drinks etc...)

• sample size

What are the elements that VCAA always looks for in a hypothesis?

• IV, DV, Comparison, Appropriate strength/direction word

• Population, IV, DV, Comparison

• IV, DV, Sample size, Control group

• Hypothesis, IV, DV, Experimental group

Which of the following is an example of an appropriate hypothesis structure?

• It is hypothesised that children who consume sugar will have a lowered level of attention compared with those who do not consume sugar.

• Children who consume sugar will not change their level of attention.

• Sugar consumption in children is related to attention levels.

• Children's attention levels are sometimes affected by sugar.

What does a controlled experiment involve?

• An experimental investigation of the relationship between multiple dependent variables (DVs) only.

• An observational study without any controlled variables.

• An experimental investigation of the relationship between one or more independent variables (IVs) and a dependent variable (DV), with all other variables controlled.

• A theoretical analysis of variables without any practical experimentation.