In an experiment, confounding occurs whenQuestion 7Answera.more than one independent variable is manipulated.b.an interaction occurs between two independent variables.c.an uncontrolled variable covaries with an independent variable.d.an interaction occurs between three or more independent variables.

When a confound exists in an experiment, it places restrictions onQuestion 5Answera.interpretations of the main effects.b.the statistical significance of the results.c.interpretations of the interactions.d.statements made about causation.

_____ occur when the behavior of the participants is influenced by the experimenter's knowledge of who is in which condition.Multiple choice question.Confounding variablesExperimenter expectancy effectsSingle-blind studiesPlacebos

An experiment involves Blank______ one variable and observing the effect on another variable.Multiple choice question.correlatingconfoundingmeasuringmanipulating

In an experiment with two independent variables, the occurrence of an interaction means thatQuestion 3Answera.the effect of one independent variable was the same at all levels of the other independent variable.b.the effect of one independent variable was different at different levels of the other independent variable.c.the experiment was poorly designed.d.there was a ceiling effect.

Any variable, other than the independent variable, that may be influencing the dependent variable in a systematic way that lead to mistaken conclusions about cause and effect is referred to as a/an _____ variable.Question 10Answera.design flawb.confoundingc.placebod.error