Experiments Flashcards
Control Group
a group treated normally & gives measure of how ppl behave when not exposed to exper treatment
eg allowed to sleep normally
Experitmental Group
group that recieve the experience treatment
eg sleep deprivation
Lab Experiment
conducted in special environment - all variables = controlled ptps aware in exper
Field Experiment
in m nat environ IV still delib controlled - ptps often not aware taking part
Natural Experiment
both environ & IV occur nat - take advantage of event that = ongoing/ has taken place - GCSEs/ nat disaster - don’t manip IV
Quasi Experiment
contain nat occuring IV but = dif between ppl already existing - gender - examine the effect on DV
Extraneous Variables
if not controlled may affect DV & provide false impression that IV has produced changes when it hasn’t - will become confounding if don’t control - will ruin validity of exper
Confounding Variables
an extraneous v that varies systematically w/ IV so can’t be sure of true source of change to DV - has probs affected results not IV
Participant Variables
difs between ptps could affect results - age, IQ, gender
Situational Variables
factors in environ that could affect the results - temp, noise, time of day - also things that could influence - DCs, investigator effects
Demand Characteristics
occur when ptp try to make sense of research situ & guess purpose of research/ present selves in good way - try to live up to demands of situ
Experimenter Effects
result from effects of researcher’s behav & chars on an investigation
What is an Experiment?
aim to measure the effect the IV has on DV
key features: control over variables, precise measurement & establishes cause & effect relas
Independent Variable
variable we manipulate by deliberate changing it to see what effect on DV is
Dependent Variable
variable we measure to see whether IV as effect - try & estab cause & effect
