Unit 8 terms Flashcards
true experiment
research procedure in which the scientist has complete control over all aspects
ex post facto design
after the fact, experiments because the experiment is conducted after the groups have been formed.
Quasi experiments are sometimes called ex post facto.
factor
Independent variables of an experiment.
Level
a particular value of independent variable in an experiment.
at least 2 independent variables
Condition
a group of treatment in an experiment.
Treatment
another word for condition applied to subjects
With-in Subjects design
type of study or experiment using one group to test all variables of the experiment and comparing the individuals to themselves.
order effect
changes in a subjects performance resulting from the position in which an condition appears in the experiment. (ordinal)
result of fatigue, learning, warm up….
sequence effects
changes in a subjects performance resulting from interactions amongst the conditions themselves.
Block randomization
control procedure in which the order of condi- tions is randomized but with each condition being presented once before any condition is repeated
Counter balancing
arranging that subjects experience the various conditions in different orders. ABC
reverse counter balancing
the method of control in which conditions are presented in order the first time and then in reverse. ABCCBA or ABBA
Between subjects design
between groups design
every participant experiences only one condition and comparison is made between groups.