Exam 3 Review: Intro to Methods

How does sample size affect determinations of statistical significance?

In order to find a curvilinear relationship, a researcher needs to use

In studies that require human participants, the most available population tends to consist of

A simple main effect analysis examines

What is the advantage of the pretest in the nonequivalent control group pretest-posttest design?

____ variables have both equal intervals and an absolute zero point.

A multiple correlation is the correlation between a combined set of _____ variables and a single _____ variable

The ________ indicates the average deviation of scores from the mean

Measures in which participants must describe themselves are __ measures

A ________ uses bars to display a frequency distribution for a quantitative variable

A researcher who measures the speed of helping in response to a request is using a ________ measure.

Using the Internet for research may lower the external validity of a study because internet users are more likley to

A regression equation is used to

Regression toward the mean refers to the fact that

Inferential statistics

Which of the following is one of the three basic ways of describing the results of research investigations?

The ____ is an appropriate indicator of central tendency only when scores are measured on an interval or ratio scale

Which of the following allows researchers to scan areas of the brain while a pt performs a physical or cognitive task?

Which of the following scales of measurement lacks numerical properties?

The process of submitting a paper to a journal where other researchers carefully review the paper is called:

The probability level required for statistical significance is referred to as the ___ of the test.

In a ________ experimental design, a subject's behavior is measured over time during a baseline control period

________ refers to the strength of association between variables.

The likelihood of the occurrence of some event or outcome is referred to as

In a daily diary study, over time, the journal entries become shorter and less detailed. This may be due to:

A ________ result is one that has a very low probability of occurring if the population means are equal

________ validity refers to the accuracy of conclusions drawn about cause and effect.

Ranking contestants in order of most to least talented is an example of what type of measurement scale?

The ________ is an appropriate measure of central tendency when scores are on an ordinal scale

Differences across age groups in cross-sectional studies could be due to developmental differences or due to __ effects

The research hypothesis states that the

A measure of ________ is a number that characterizes the amount of spread in a distribution of scores

When describing relationships between variables, a Pearson r correlation nearer to 1.00 (plus or minus) indicates that

A quasi-experimental design attempts to

Which of the following describes a sequential design?

In a multiple baseline design, in order to conclude that a treatment is effective, a behavior change must be observed

A factorial design involves

Which of the following examples best represents the use of an interval scale?

________ of research is a way of overcoming any problems of generalization that occur in a single study

A ____ identifies trends in the literature; a(n) ____ allows statistical, quantitative conclusions about the research.

The best way to describe the results of a survery comparing the # of 3rd- and 6th-grade students who buy lunch is to

A(n) __ appears to be another pt in a staged manipulation experiment, but is actually part of the manipulation

Rejecting a true null hypothesis is called a __ error; not rejecting a false null hypothesis is a __ error

In the context of the types of measures, ____ measures are recordings of responses of the body.

An interaction occurs whenever

____ validity is the extent to which findings may be generalized.

Which of the following is true of statistical analysis of data?

Events that occur between the 1st and 2nd measurement period but are not part of the manipulation are called __ effects.

Which of the following is true of the correlation coefficient?

To study development, the same individuals at 11, 14, 21, and 30 years of age are studied. This is an example of:

According to the ________ hypothesis, the independent variable has no effect