KINE 2049 Chapter Notes - Chapter 6: Motor Learning, Internal Validity, Random Assignment

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 2049
• Professor: Merv Mosher

Document Summary

3 basic experimental designs that are defined by the way subjects are assigned to groups in an experiment: Independent groups design: repeated measures design, mixed groups design. Note that the first two can be used in designs with 1 or more independent variables while mixed groups design can only be used in complex experiments (2 or more variables) Each treatment condition is administered to a separate group of subjects. Used i(cid:374) situatio(cid:374)s (cid:449)he(cid:396)e pa(cid:396)ti(cid:272)ipatio(cid:374) i(cid:374) o(cid:374)e (cid:272)o(cid:374)ditio(cid:374) (cid:373)ea(cid:374)s you (cid:272)a(cid:374)"t do the othe(cid:396) o(cid:374)e. E. g. one group taking aspirin, the other taking a placebo you (cid:272)a(cid:374)"t do (cid:271)oth. Biggest disad(cid:448)a(cid:374)tage is pote(cid:374)tial fo(cid:396) g(cid:396)oup that a(cid:396)e(cid:374)"t the e(cid:395)uivalent on some important variable at the beginning of the study. Simple random design: most common method of assigning to independent groups, can draw names out of a hat, etc. to assign randomly.