PROBLEMS ALL OVER
What type of experiment do only the participants not know whether they are receiving a treatment or not?
Single-blind study
To ensure that a sample represents a target population, researchers select
people at random from the target population
Method of research that looks at different age groups at the same time in order to understand changes that occur during a lifespan
Cross-Sectional Method
Scientists are cautious about making generalizations from case studies because
case studies cannot always be replicated
Observational research method in which data is gathered for the same subjects repeatedly over a period of time
Longitudinal Method
What is an educated guess, the second step in the research process?
Hypothesis
A placebo is often as effective as taking a medication because
a person's expectations affect the result of a treatment
By using a random sample of a population for a study, scientists hope to avoid
bias in their study
What is calling people to ask a specified list of questions concerning their opinion called?
survey
What is an in depth study of a single person or group revealing some general principle called?
case study
The cross-sectional method charts changes over time by
comparing participants from different age groups
What is the third step in the research process?
Testing the hypothesis
Which of the following is true about the correlation?
A. it does not reveal cause and effect
B. it does not show relationships
C. it is the dependent variable
D. it shows cause and effect
It does not reveal cause and effect
Subgroups in the population are represented proportionally in the sample
Stratified Sample
What is the study of behavior in a natural situation without manipulation, in contrast to a lab called?
naturalistic observation
The case-study method of observation was practiced by this Psychodynamic psychologist
Sigmund Freud
The longitudinal method is concerned with observing
the ways in which people change over time
In a study, what are the participants who receive the treatment called?
experimental group
A double-blind study is sometimes needed because researchers
may have expectations that affect their observations
When each member of a population has an equal chance of being chosen in a study, persons selected are a
random sample
What is a measure of how closely one thing is related to another; used for analyzing and interpreting observations?
correlation
A major advantage of case studies is they offer a lot of this about one person
detailed information
The greatest drawback of the longitudinal method is that participants in the study
may drop out
What is the group in an experiment that does not receive treatment?
control group