hoorcollege 2 Flashcards

(18 cards)

1
Q

betrouwbaarheidsinterval

A

ondergrens, bovengrens, verschil, nauwkeurigheid van schatting

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2
Q

breedte van interval

A

steekproefgrootte: grotere steekproef, smaller interval
gekozen betrouwbaarheidsniveau: hoger bn, breder interval
spreiding in scores: grotere spreiding, breder interval

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3
Q

assumpties voor t-toets

A

aselecte steekproef
afhankelijke variabele interval/ratio
twee groepen zijn onafhankelijk
geen uitschieters
scores normaal verdeeld (robuustheid, meer dan 30 participanten)

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4
Q

design cofound

A

Is deze variabele wel het enige verschil

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5
Q

maturation threat

A

natuurlijke ontwikkeling

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6
Q

history threat

A

externe geberutenis

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7
Q

regression to the mean

A

extreme scores kunnen niet nog extremer

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8
Q

observer bias

A

onderzoeker wil graag

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9
Q

demand characteristics

A

participanten willen graag

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10
Q

order effect

A

volgorde bij herhaalde meting invloed op afhankelijke variabelen

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11
Q

attrition threats

A

uitvallen

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12
Q

testing threats

A

beter worden

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13
Q

instrumentation threats

A

meetinstrument verandert

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14
Q

weak manipulations

A

interventie slecht uitgevoerd

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15
Q

power problem

A

weinig participanten

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16
Q

no effect

17
Q

placebo effect

A

participanten denken dat er wat verandert

18
Q

selectie effect

A

groepen verschillen voor het experiment al