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

Experimenter expectancy effects occur when the behavior of the is influenced by the experimenter's knowledge of who is in which condition.

Which of the following are crucial characteristics of an experiment?Multiple select question.Ability to examine associationsAbility to observe phenomena in a natural settingRandom assignment of participants to conditionsManipulated independent variable

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

The ________ variable in an experiment is an attribute that is manipulated by an experimenter under controlled conditions.Multiple Choiceconfoundingquantitativeoutcomeindependent

______ studies are those in which participants do not know the experimental condition (group) to which they have been assigned.Multiple choice question.Single-blindDouble-blindExperimentalCorrelational