AP Psych: Unit 1 Test, Experimental Research

What are the two ways an experiment is used?

Change varibables, measure cause and effect

Experiment

research method where an investigator manipulates a variable under carefully controlled conditions

independent vs dependent variable

thing changed vs measured

confounding variable

factor other than IV that might effect the experiment

operational definition

describes actions used to measure a controlled variable to allow studies replication

Hawthorne effect

being selected to take part in an experiment will affect the performance of that group

placebo effect

participants expectations lead them to experience a change even if they haven't received it

what needs to happen to avoid sampling bias

sample needs to be generalized

experimenter bias

experimenters wishes sway experiment

double blind procedure vs single

experimenter and participants dont know control vs experimenter

just participants dont know

pros vs cons for experimental design

only way to see cause and effect

more work, harder to control, answers specific thing, can be inconclusive