Finding IVs and Dvs:
IV: object of study, what is manipulated, selected to be
different for different groups.
DV: what you could to see an effect on, what is measured
or observed
-- This research ascertained the role of motivational style
(extrinsic, intrinsic, amotivational) as predictors of
behavioral persistence in a real-life setting. In this case,
persistence was operationalized as number of optional
and required activities completed.
IV1: Motivational style 3 (extrinsic, intrinsic,
amotivational)
DV1: Number of optional activities completed
DV2: Number of required activities completed
-- Professor Hyde studies the effects that drugs have on
animal activity. She used several types of rats including
white, gray, and silver. She randomly assigned each type
of rat to either 3 cc’s or 6 cc’s of Metacive and one hour
later they were asked to run an exercise wheel and
counted the number of revolutions in 10 minutes.
IV1: Type of rat 3 (white, gray, and silver)
IV2: Metacive dosage 2 (3 cc’s or 6 cc’s)
DV1: Number of revolutions in 10 minutes
-- A researcher did an experiment investigating the
effectiveness of computer-assisted instruction. Half of the
students received reading instruction using the new gamestyle instruction on the computer while half received the
standard method not on the computer. He thought that any
enhancement effects may differ dependent upon the
student’s gender so he separately randomize a set of first
grade girls to the two different conditions and a group of
boys two conditions. He gave students a standardized
reading test after the instruction to see whether they could
read better.
IV1: computer-assisted instruction 2 (game-style
instruction, standard method)
IV2: Gender 2 (male, female)
DV1: Score on standardized reading test
-- Can the type of thoughts one has before a public
speech influence their anxiety level during the
performance?
IV1: Type of thoughts
DV1: Anxiety level
-- I read a study by a zoologist who compared the strength
of chimpanzees to the strength of gorillas. Surprisingly, the
study found no difference in their strength!
IV1: Animal type 2 (chimpanzees, gorillas)
DV1: Strength
-- Recently I read an article describing an experiment that
tested the effectiveness of a memory pill that is marketed
to improve your short-term memory capability.
IV1: memory pill (??)
DV1: short-term memory capability
-- Parents for years have expressed concern that listening
to heavy metal music leads to negative emotional
experiences, such as depression, in their children, but a
fascinating study was recently reported suggesting that
parents can relax. In the study, 80 participants were
randomly placed into either a no-music group or a heavy
metal group. Those in the no-music condition were
instructed not to listen to music for one month. Those in
the heavy metal group were instructed to listen to heavy
metal music for two hours every day for one month. One
month later, all the participants showed up to fill out a
survey with many different rating questions so they were
not aware that the hypothesis was about depression. ….
IV1: presence of music (no-music, heavy metal)
DV1: score of depression survey