Flashcards
[3] experimentgal designs
Cards in this deck (16)
- 1independent group designbdifferent participants used for each condition
- 2ADV of IGDORDER EFFECTS AVOIDED -p only takes part in one condition (performance in 1 condition will not improve/decrease their perfomance in the other condition (order effects) - increases v
PARTICIPANTS LESS LIKELY TO BE AFFECTED BY DC- one condition - exposed to fewer cues than with repeated measure design
2. SAME STIMULUS MATERIAL CAN BE USED FOR ALL PARTICPANTS - diff p in each condition (participants are equally exposed to materials that are EQUALLY easy/challenging
LESS TIME CONSUMING - possible to test all participants at the same time (saves researcher time and money) - 3disadvantage of IGDnot always possible to test participants at the same time when using IGD
- 4disadvantage of IGDPOARTICIPANT V MAY CONFOUND RESULTS-diff participants in each condition (dv may be influenced by the specific characteristics of the individuals in each condition (pv) rather than IV
MORE TIME CONSUMING THAT RM TO GATHER SAMPLES - diff p in each condition (twice as many p needed than for a RMD - 5how can we overcome participants variables and researcher bias confounding resultsrandom allocation
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- all p allocated a number
number in a hat
the first ... are allocated to condition 1 the second to c 2 until they are equal in each c - 6REPEATED MEASURE DESIGNsame particpants partcipate in all conditions of the experiment
- 7ADVPV DO NOT CONFOUND RESULTS - same partipants used in both conditions of the experiment (any difference in dv cant be due to differences between participants ). more likley to be affected by IV
LESS TIME CONSUMING - same particpants used in all conditions. (fewer p needed than in igd - saves reseracher's time and money) - 8DISDC MORE LIKELY TO AFFECT RESULTS- exposed to more cues than with igd
SAME STIMULUS CANT BE USED FOR ALL PARTICIPANTS - participants are the same in each condition(exact stimuli cant be used in both conditioms - p may not be exposed to materials that are equally as easy/challanging
MORE TIME CONSUMING - same p are in each conditioonm (all conditions cant be tested at the same time- takes more time to carry out the experiment than when using independent groups)
ORDER EFFECTS MAY CONFOUND RESULTS - factors that relate to the order in which the participants experince the conditions (may improve /reduce their perfomance in one of the condiions)- decreases v - 9examples of order effectspractice effects - may perform bettwer in the sceond condition due to practice from the first
fatigue- get tired and scores decline in 2 condition
Boredom - sick of the experiment and stop concentrating so perform worse in the 2 c - 10way to avoid order effectsCOUNTERBALANCING
- half the participants randomly allocated to condition A_B
- other allocated condition B-A
(ABBA) - 11adv of abba- controls impact of order effects
- allows order effects to be distributed evenly across both conditions
- makes each condition of the iv occur as the first task and 2 task equally
- COUNTERBALANCING DOESNT ELIMINATE ORDER EFFECTS WHICH WILL BE PRESENT BECAUSE THEY ARE TWO SEPARATE TASKS TO BE COMLETETED BY EACH PERSON - 12matched pair designparticipants are paired as closely as possible on important relevant variables and then one from each pair is allocated to each condition
- 13how to match pairsparticpants are paired togetehr ona variable relevant to he study following an assesment (eq a questionaire)
- p with 2 highest score are paired then the next and so on until all are paired
one particpant in ecah pair would be randomly allocatedto a different condition of the experiment (there are an aqual no. of particpants in each group) - 14why is it important to match pairsvariable that isn't controlled could impact results of study (DV)
- by matching pairs on a variable relevant to the study (keeps this participant variable constant) - 15adv of MPDPARTICIPANT V LESS LIKELY TO AFFECT REESULTS THAN WITH IGD- particpants are matchedon important variables (any difference in the dv is unlikely to be due to pv and is more likely to be affect of the iv)
ORDER EFFECTS AVOIDED - p only take spart in one condition (perfomance in one condition wont affect improve/decrease their perfomance in the the other condition -order effects)
PARTICIPANTS ESS LIKJELY TO BE AFFECTED BY DC- only in one condition (exposed to fewer cues than with rmd )
SAME STIMULUS CAN BE USED FOR ALL PARTIPANTS - exact same stimulus can be used in both conditions (participants are exposed to materials that are equally as easy/challenging
LESS TIME CONSUMING - may be possible to test all p at the same time - 16DISDIFFICULT AND TIME CONSUMING TO MATCH PAIRS - researcher must conduct tests so that each participant in one condition is appropriately matched with one in the other condition (difficult as there are a number of relevant factors that would need to be controlled e.g. gender, intelligence)- time consuming and expensive
MORE TIME CONSUMING THAN WITH RM TO GATHER SAMPLE - different participants in each condition (twice as many participants are needed than for a rmd
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- A level Psychology Flashcards on [3] experimentgal designs, created by Ellaine Wahome on 29/11/2022.
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- Ellaine Wahome · Nov 2022
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- May 2, 2023
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