PSY 250 Lecture Notes - Lecture 7: Werner Rauh, Antidepressant, Birth Weight

• School: University at Buffalo
• Department: Psychology
• Course: PSY 250
• Professor: Quinton Wendy

Document Summary

*has two deining characterisics: manipulaion of an iv: one group gets new ani-anxiety drug; one group gets placebo. Experimental group: group that receives treatment (ani-anxiety drug). Control group: group that doesn"t receive treatment (placebo): control over extraneous variables (extra variable): Extraneous variable: any variable not manipulated in experiment but that sill may afect outcome. Any variable that you don"t manipulate but afects the outcome. Ex: study on sugary snacks vs. healthy snacks on mood. Hold extraneous variables constant: make sure the treatments are exactly alike, except for the level of the iv: ex: Keep experimenter aire, and the presentaion style the same. Everything you tell the paricipant should be scripted and automated because we want it to stay the same. If you"re running animal research, you need to keep the cage condiions, treatment, and diet the same (unless those are the variables you are manipulaing). Randomizaion: make sure remaining extraneous variables operate in enirely random fashion.