Exam 3: Experimental Design

An experimenter finds that when a person takes part in a study they become quite nervous, when normally they are confident and assertive.This threatens the internal and external validity of their findings and is an example of what phenomenon?

A researcher conducts a study in which participants are asked to administer electric shocks to a participant in what they believe to be a memory experiment, but which in fact is a study of obedience.In fact the shocks are not real, but the participant does not know this.However, some of the participants see through the cover story.Which of the following is true?

Which of the following statments is true?

The choices that an expertimenter confronts that involve how to design an experiment in order to test a particular hypothesis relate to issues of which of the following?

An experimenter conducts a study in which 16 people are asked to pedal a bicycle for 40 minutes and then perform a free recall memory task.They all then lie down for two hours and then perform a recognition memory task.Which of the following statements is false?

"Systematic change to an independent variable where different participants are exposed to different levels of that variable by the experimenter." What procedure is this a glossary definition of?

A team of researchers conduct a study in which they want to look at how the performance of children is affected by a change in government education policy.To do this, thet look at the performance of students in 2 private and 2 public schools before and after a change of government policy.Which of the following is true?

An experiment is conducted in which one group of participants is asked to perform maths tasks while watching television, a second group of participants is asked to perform maths tasks while listening to the radio, and a third group of participants is asked to perform math tasks while doing nothing else.Which of the following statements is true?

"The process of directly generalizing research findings to other settings and samples, without basing that generalization on a theory or explanation of the research findings." What construct is this a glossary definition of?

"The process of attempting to remove systematic differences between experimental groups on variables not of primary interest but considered likely to produce differences in a dependent variable" What procedure is this a glossary definition of?

An experiment is conducted in which one group of participants is asked to perform maths tasks while watching television, a second group of participants is asked to perform maths tasks while listening to the radio, and a third group of participants is asked to perform math tasks while doing nothing else.Which of the following statements is true?

"A special case of maturation effects where performance on a post-test deteriorates as a result of boredom or tiredness associated with having already completed a pre-test." What type of effect is this a glossary definition of?

"Systematic variation in the order in which participants respond to dependent measures or receive treatments.This is designed to neutralize or help quantify order effects in within-subjects designs." What experimental procedure is this a glossary definition of?

Which of the following statements is true?

An experimenter conducts a study in which 16 people are asked to pedal a bicycle for 40 minutes and then perform a memory task.They all then lie down for two hours and then perform a recognition memory task.Which of the following statements is true?

An experimenter conducts an experiment in which subjects are randomly assigned to one of three conditions.Subjects in each condition consume different amounts of carrot juice and then have to perform tests of (i)visual acuity and (ii)mathematical reasoning.The experimenter's null hypothesis that consumption of carrot juice does not affect either visual acuity or mathematical reasoning is confirmed.Which of the following statements is true?

A team of researchers conduct a study in which they want to look at how the performance of children from the worst-performing school in the country is affected by a change in government education policy.Looking at a new sample of students, they find that a year later the school is no longer the worst-performing and attribute this to the effects of the policy.Which of the following is most likely to affect the internal validity of this conclusion?

Which of the following statements is true?

A researcher conducts a study in which participants are placed in a simulated prison and assigned to roles as prisoners and guards.As part of the experimental briefing he gives participants clues about the hypothesis he is testing and about how he wants them to behave.Which of the following may compromise the internal and external validity of the research?

What is the purpose of a manipulation check?