Exam 2 chapter 7 Flashcards
define between sunjects
results are compared between different subjects
define within subjects
results are compared in same subject
define pretest-posstest design
a group of participants is tested twice, using same measurement; once before and once after independent variable is manipulated
define repeated-measures design
multiple dependent measurements for each participant
define longitudinal design
a type of repeated-measures design that tracks participants over long time periods
what are some benefits of the within-subjects design
lower error variance, less time, fewer particapnts, subject variables remain constant
list disadvanatages of within subjects design
susceptible to demand characteristcs, may require use
what is a carryover effect
particpants performance alters becausetheyve done a taks numerous times
what is the practice effect?
partipcant performane imptorves
what is the history effect
if an event occurs that affects all performances on the dependent measure
what is the maturation effect
scores change becuase of time passed
define testing effect
experiences on previous test affect results of their next test
define regression toward the mean
the phenomenon in which scores move closer to mean
within subjects design cannot test what?
subject and selected variables
define counterbalancing
presenting different conditions to different people in different orders to prevent carryover effects
