Exam 9: Conducting Experiments

A _____ is an attempt to directly measure whether the independent variable manipulation has the intended effect on the participants.

Rachel compares the math skills of boys and girls in the sixth grade. She administers a series of math problems to both groups and asks them to solve as many problems as they can within a 15-minute time period. She finds that both groups were able to answer only 2% of the problems. The result obtained can be due to the _____ effect.

In the early stages of a research project, the researcher would want as _____ as possible in order to demonstrate that a relationship between variables exists.

Investigators sometimes use deception in their case procedures to address the problem of _____.

A researcher conducted a study to analyze the effect of gender bias on company recruitments. The purpose of the study was not revealed to the participants until the research was completed. Such a measure of not revealing the purpose initially is executed due to the problem of _____.

Which of the following statements is true of the use of staged manipulations?

Which of the following measures of the dependent variable is generally inexpensive?

Promelute, a pharmaceutical company, conducts a research on participants for its new drug for obsessive-compulsive disorder. But the experimenter is unclear about the conclusions of the study because he is not sure if the improvement has been caused by the properties of the drug or by the participants' expectations about the effect of the drug. Such an effect is known as a(n) _____ effect.

In the context of measuring the dependent variable, _____ measures are recordings of responses of the body.

In general, staged manipulations are _____ than straightforward manipulations.

A manipulation in which participants are run individually versus as a group is an important consideration regarding the _____ of the manipulation.

The issue of _____ is particularly important when measuring human performance.

Which type of manipulation manipulates variables with instructions and stimulus presentations?

Responses by participants to interviews and questionnaires are _____ measures.

Dr. Mills measures participants' brain-wave activity in order to study the brain's response to sounds of varying frequencies. Which type of physiological measure is Dr. Mills using in this scenario?

Identify a reason for using staged manipulation.

Saul, a researcher, presents his dog with a bowl of normal dog food and a bowl of vitamin-enriched dog food. He then records the amount of each type of food the dog consumes as a measure of his dog's food preference. What kind of measure has the researcher used?

A(n) _____ allows the experimenters who are collecting the data to become comfortable with their roles and to standardize their procedures.

When the independent variable appears to have no effect on the dependent measure because the participants quickly reach the maximum performance level, it is known as _____ effect.

Which of the following physiological measures is a researcher most likely to use to compare brain images between individuals with and without Alzheimer's disease?