Exam 2: Psychologys Scientific Method

A quasi-experimental design does not randomly assign participants to conditions because such assignment is either impossible or unethical.

Define the term external validity,and determine the research technique that provides the highest degree of external validity.

The internal validity of a study refers to the degree to which an experimental design actually reflects the realworld issues it is supposed to address.

Derek,an Internet activist,committed suicide.Investigators explored Derek's past interactions on Wordbook,a famous social networking site,to discover any information that might reveal the reasons behind his suicide.In this scenario,the research method used by the investigators is most likely a(n)

Dr.Schwartzmiller believes that herbal medicines significantly reduce the number of depressive symptoms in women.She wants to use experimental methods to test her hypothesis.What components of a well-designed experiment should be included in this study?

Which of the following methods is used to gain knowledge through the observation of events,the collection of data,and logical reasoning?

In the context of experimental research,random assignment of participants is important in order to ensure that

Explain the third variable problem of correlational research with an example.

In drug studies,using a double-blind experiment design ensures that

Standard deviation is a measure of central tendency that is the difference between the highest and lowest scores.

Studies conducted by psychologists are automatically accepted by the rest of the research community

In descriptive statistics,the _____ is determined by adding up participants' scores and dividing by the number of scores.

In the context of measures of central tendency,the mode of a distribution of scores refers to the

The _____ consists of participants in an experiment who are as much like the experimental group as possible and who are treated in every way like the experimental group except for a manipulated factor,the independent variable.

In the context of psychology's scientific method,a(n)_____ is an educated guess that derives logically from a theory.

For a research project,Joaquin observes student behavior during a learning task and attempts to form a _____,which is a broad idea or set of closely related ideas that attempts to explain observations and to make predictions about future observations.

In the context of psychology's scientific method,which of the following is true of theories?

In the context of evaluating theories in psychology,_____ replication means doing a study precisely as it was conducted in its original form.

The more hypotheses a theory generates,the more likely it is that the theory is .

In a _____,neither the participants nor the experimenter administering the treatment are aware of which participants belong to the experimental group and which are part of the control group.