Chapter 2: Methods in Psychology Flashcards
theory
framework for explaining various events or processes
hypothesis
a testable prediction derived from theories that is falsifiable
population
the entire group we wish to study
sample
a subset of the population
what are the goals of psychology?
describe, explain, predict, control
representative sample
matches the population on a number of important variables
random sample
every member of population has an equal chance of being in the sample
WEIRD
Western educated industrialized rich democratic
experimental methods
observation, correlational research
observation
describe what you see
what are different way to observe?
naturalistic observation, survey, case study
correlational research
asks if there is a correlation between x and y
quasi-experimental design
uses pre-existing groups (but cannot make causal statements)
independent variable
variable we are changing
dependent variable
variable we are measuring
random assignment
assigning participates to experimental and control conditions by chance
single blind
research design in which participates don’t know which group they are in
double blind procedure
research design in which both parties are ignorant in who received the treatment and placebo
internal validity
an attribute of an experiment that allows it to establish causal relationships; the extent the results are true of the population; asks if there was bias
external validity
an attribute of an experiment in which variables have been defined in a normal, realistic, or typical way; can it be generalized in another situation or environment
conformation bias
a tendency to search for information that confirms one’s preconceptions
informed consent
a verbal agreement to participate in a study made by an adult who has been informed of all the risks that participation may entail
Freedom from coercion
physical and psychological coercion but monetary coercion as well
Protection from harm
Psychologists must take every possible precaution to protect their research participants from physical or psychological harm
Risk–benefit analysis
Although participants may be asked to accept small risks, such as a minor shock or a small embarrassment, they may not even be asked to accept a large risk, such as severe pain or psychological trauma, that is greater than the risks they would ordinarily take in their everyday lives
Deception
Psychologists may use deception only when it is justified by the study’s scientific, educational, or applied value and when alternative procedures are not feasible
Debriefing
a verbal description of the true nature and purpose of a study
Confidentiality
Psychologists are obligated to keep confidential any private or personal information obtained during a study
hindsight bias
a psychological phenomenon that allows people to convince themselves after an event that they accurately predicted it before it happened