psychology - types of experimental design 0.0 / 5 ? PsychologyResearch methods and techniquesA2/A-levelAQA Created by: MollySmith2002Created on: 13-10-19 17:58 describe independent measures ppts randomly assigned to each experimental conditions, 2 or more groups doing different tasks 1 of 12 describe repeated measures all ppts complete each of the conditions 2 of 12 describe matched pairs ppts matched on variables first then allocated to different experimental conditions 3 of 12 adv and disadv of independent adv=easy to split,reduced demand characteristics disadv=variation between ppts can affect DV 4 of 12 adv and disadv of repeated adv=fewer need to be sampled,fair disadv=improvement due to practice, may be bored 5 of 12 adv and disadv of matched adv=control differences affect results disadv=time consuming,less data 6 of 12 define counterbalancing ppts divided in half. one half does two conditions in one order and other half completes conditions in another order, deals with order effects 7 of 12 define order effects ppts behave different because of order of conditions, performance better because of practice, decrease due to boredom, reduced by counterbalancing 8 of 12 define randomisation randomly allocate ppts into diff groups/conditions, randomly even out characteristics in groups 9 of 12 minimise problems of independent random assignments to groups, use other designs 10 of 12 minimise problems of repeated leave gaps between tasks, counterbalancing, use other designs 11 of 12 minimise problems of matched use independent measures design 12 of 12
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