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Week 6 - Research Design and Sampling Flashcards

(17 cards)

1
Q

Pseudo-random binary sequences (PRBS)

A

Use to reduce bias in random sampling

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2
Q

Pretest + posttest

A

Use same group, baseline first then experiment/control group.

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3
Q

Randomised posttest

A

Posttest only - no baseline

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4
Q

Matched-pairs design

A

Match people that are similar and split them into different groups

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5
Q

Repeated-measures designs

A

Uses same individuals over and over

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6
Q

Statistical matching

A

Use instead of matched pairs for covariates

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7
Q

Strengths of RCT

A
  • shows significant effect
  • low researcher subjectivity
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8
Q

Limitations of RCT

A
  • expensive
  • need lots of ppl
  • low external validity
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9
Q

Quasi-experimental designs

A

At least 1 of 3 is missing:
1. random sampling
2. control groups
3. manipulation

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10
Q

Non-RCT

A

Self-selected

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11
Q

Interrupted time series

A

Observations - treatment occurs naturally or administered over time

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12
Q

1 group posttest

A

Limitation = no baseline/control group

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13
Q

History effect

A

External event biases DV

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14
Q

Maturation effect

A

Change with time bias

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15
Q

Instrument decay

A

Gradual loss of measurement accuracy

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16
Q

Regression toward mean

A

If 1 is extreme then the next is closer to mean