Research Methods

a response or behavior that is measured

one variable is up, second variable down

one variable up, second variable up

cause and effect relationship impossible

relation between small numbers of participants

stimulus of the environment that the experimenter directly manipulates to determine its influences on behavior

more than one independent variable

equal variances

two means are not equivalent

series of research experiments concerning a related topic

group that receives the independent variable

doesnt receive the independent variable

the blue print (select participants, assign participants to experimental conditions, control extraneous variables, and gather data)

groups formed by random assignment

contrast between groups who were randomly assigned

participants have their own control

dependent variable due to effects of the independent variable

factors other than the independent variable

excepting the experimental hypothesis when the null hypothesis is true

a series of research experiments concerning a related topic or question

the sole effect of one independent variable in a factorial design

joint, simultaneous effect on the dependent variable of more than one independent variable

mixture of independent groups for one independent variable in correlated groups for another independent variable

one independent variable with three or more groups

independent groups of participants

uses correlated groups of participants

groups that receive the independent variable

formed by matching, natural pairs, repeated measures