experimental design Flashcards

1
Q

describe independent groups design

A

ppts preform in only 1 condition of the IV

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2
Q

give strengths of independent groups design

A
  • no order effects
  • no demand characteristics
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3
Q

give limitations of independent groups design

A
  • no control over ppt variables ( different abilities of ppts in various conditions affect DV)
  • need more ppts to gather same amount of data
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4
Q

what is a solution to a limitation of independent groups design?

A

random allocation
- ensures each ppt has the same chance of being in 1 condition of the IV as another

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5
Q

describe repeated measures design

A

same ppts takes part in all conditions of the IV

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6
Q

**

give strengths of repeated measures design

A
  • eliminates ppt variables
  • fewer ppts needed , not as time consuming
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7
Q

give a limitation of repeated measures design

A

-order effects present eg. boredom

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8
Q

what is a solution to a limitation of repeated measures design?

A

counterbalancing
- half the ppts do connditions in 1 order then other half do it in opposite order

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9
Q

describe matched pairs design

A

pairs of ppts first matched on a varibale that affects the DV
then 1 member of each pair does 1 condition and the other does another

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10
Q

give strengths of a matched pairs design

A
  • no order effects
  • less demand characteristics
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11
Q

give limitations of a matched pairs design

A
  • time consuming + expensive to match ppts
  • large pool of potential ppts needed
  • difficult to know what variables are appropriate for the ppts to be matched
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