Psychology

theoretical entities, or concepts, that enable
one to discuss something that cannot be seen, touched, or measured directly

a prediction or assumption about behavior that
is tested through scientific research

to repeat a research study, usually with different
participants and in different situations, to confirm results of an original
study

a research technique for acquiring data about
the attitudes or behaviors of a group of people, usually by asking questions of
a representative, random sample

the total group to be studied or described and from whom samples may be drawn

a representative segment of a target population

a survey population, selected by chance, which
fairly represents the general population

a sample drawn in such a way that known
subgroups within a population are represented in proportion to their numbers in
the general population

the concept that people who volunteer to
participate in research studies often differ from those who do no volunteer 

an in-depth study of a single person or group to reveal some universal principle

a type of research in which the same people are
studied over a long period of time

a method of research that looks at different age
group at the same time in order to understand changed that occur during the
life span

the study of behavior in naturally occurring
situations without manipulation or control on the part of the observer

the study of behavior in a controlled situation

the relationships between variables

a relationship between variables in which one
variable increases as the other variable also increases

an unpleasant stimulus between two variables in
which one variable increases as the other variable decreases

a controlled scientific procedure to determine whether certain variables manipulated by the researcher have an effect on other variables

factors that are measured or controlled in a scientific study

in an experiment, the factor that is being measured and that may change in response to manipulations of the independent variables

the factor that is manipulated by the researcher to determine its effect on another variable

in a study, the participants who receive treatments

in an experiment, the group that does NOT receive the treatment

an experiment that uses both a control group and experimental group to determine whether the independent variable influences behavior, and if so, how does it

placebo

a study in which the participants are unaware  of whether they are in the control group or experimental group

an experiment in which neither the participant nor the researcher knows whether the participant has received treatment of placebo 

a measure of the distance of every score to the mean

rules and standards for proper and responsible behavio

an agreement by an individual to participate in research after receiving information about the purpose of the study and the nature of the treatment