Chapter 8-Research Metods

a variable that is not controlled in a research investigation

When the response to the second condition in the experiment is altered because the two conditions are contrasted to one another.

a method for controlling order effects in a repeated measures design by either including all orders of treatment presentation or randomly determining the order for each subject

a deterioration in performance as the reasearch participant becomes bored tired or disoriented

an experiment in which different subjects are assigned to each group. AKA- between-subject design

the certainty with which results of an experiment can be atributed to the manipulation of the IV rather than to some other variable.

technique to control for order effects with out having all possible orders.

method of assigning subjects to groups in which pairs of subjects are first matched on some charachteristics and then individually assigned to groups.

loss of subjects who decide to leave an experiment

in a repeated measure design the effect that the order of introducing treatement has on the DV

the expreimental design in which the DV (post test) is measured only once after the manipulation of the IV

improvement in performance as a result of repeated performance on a task

true experimental design where teh DV is measured both before and after manipulation of the IV

an experiment in which the same subjects are assigned to each group AKA with in subjects design

differences in type of subjects who make up each group in an experimental desgn. This happens when participants elect which group theyh are to be assigned to.