Ch. 9 Vocab Flashcards
(20 cards)
a design in which different subjects take part in each condition of the experimenter
between-subject designs
a process of randomization that first creates treatment blocks containing one random order of the conditions in the experiment; subjects are then assigned to fill each successive treatment block
block randomization
a condition in which subjects receive a zero value of the independent variable
control condition
the subjects in a control condition
control group
a statistical estimate of the size or magnitude of the treatment
effect size
a treatment condition in which the researcher applies a particular value of an independent variable to subjects and then measures the dependent variable; in an experimental group - control group design, the group that receives some value of the independent variable
experimental condition
the general structure of an experiment (but not its specific content)
experimental design
the subjects in an experimental condition
experimental group
a between-subjects design with one independent variable, in which there are more than two treatment conditions
multiple-groups design
the most commonly used multiple-groups design in which subjects are assigned to the different treatment conditions at random
multiple-independent-groups design
a mini-experiment using only a few subjects to pretest selected levels of an independent variable before conducting the actual experiment
pilot study
in drug testing, a control condition in which subjects are treated exactly the same as subjects who are in the experimental group, except for the presence of the actual drug; the prototype of a good control group
placebo group
creating pairs whose subjects have identical scores on the matching variable
precision matching
the technique of assigning subjects to treatments so that each subject has an equal chance of being assigned to each treatment condition
random assignment
creating pairs of subjects whose scores on the matching variable fall within a previously specified range of scores
range matching
creating matched pairs by placing subjects in order of their scores on the matching variable; subjects with adjacent scores become pairs
rank-ordered matching
a design in which two groups of subjects are exposed to different levels of the independent variable
two-experimental-groups design
the simplest experimental design, used when only two treatment conditions are needed
two-group design
an experimental design in which subjects are placed in each of two treatment conditions through random assignment
two-independent-groups design
an experimental design with two treatment conditions and with subjects who are matched on a subject variable thought to be highly related to the dependent variable
two-matched-groups design
