Term:Non Experimental DesignsDefinition:Look very similar to true experiments,establishes group scores but cannotassign to group. Has threats tointernal validity, cannot establishcause and effectTerm:Quasiexperimental DesignsDefinition:some attempt to control threats,cannot manipulate IV, can't controlother variables or establish temporalprecedence.Term:assignment biasDefinition:threat to internal validity, whendifferent participants are assigned togroups where individuals shownoticeably different characteristicsTerm:Non equivalent groupsDefinition:A between subjects design that usedistinct groups that use different levelsof IV, happens because randomassignment is impossibleTerm:Between subjects Approaches consistof two groups what are they?:Definition:Differential research and post-testonly design
Term:Differential ResearchDefinition:groups formed based on personcharacteristics like gender/ageTerm:Post-test only designDefinition:Pre-existing groups, compares scoresafter treatmentTerm:Prepost designsDefinition:A type of within subjects design. agroup is measured receives treatmentand then measured again. counterbalancing is impossible. very goodpilot studies but have very low internalvalidityTerm:Time series DesignDefinition:A within subjects quasi experiment.multiple measures are taken beforetreatment, treatment is implemented,scores measured again.
Term:Between Subjects Post Only DesignsDefinition:Pre-existing groups compare scoresafter treatmentTerm:Developmental designsDefinition:examine changes in behavior due toageTerm:Cross sectionalDefinition:separate groups, separate scoresTerm:LongitudanalDefinition:Observes over timeTerm:Cross sectiona/ LongitudanalDefinition:Uses both at the same time, calledaccelerated cohort effects
Term:Correlational ResearchDefinition:Goal is to see if two variables haveany consistent pattern or relationshipTerm: